67486 + Interview Questions in Secondary School in Physics

1.	The prefix 'milli 'represents ________factor and explain plx
Answer» EXPLANATION: Milli- ... Milli- (symbol m) is a UNIT PREFIX in the metric system denoting a factor of one thousandth (10−3). Proposed in 1793 and adopted in 1795, the prefix comes from the Latin mille, meaning "one thousand" (the Latin plural is milia).

1.

The prefix 'milli 'represents ________factor and explain plx

Answer»

Milli- ... Milli- (symbol m) is a UNIT PREFIX in the metric system denoting a factor of one thousandth (10−3). Proposed in 1793 and adopted in 1795, the prefix comes from the Latin mille, meaning "one thousand" (the Latin plural is milia).

Discussion

2.	Page No.:In france during the old Regime the church toa extracted its sharetexes fromof
Answer» Peasants were obliged to RENDER services to the LORD – to work in his house and fields – to serve in the ARMY or to participate in building roads. The Church too extracted its SHARE of taxes called tithes from the peasants, and finally, all members of the THIRD estate had to pay taxes to the state.

2.

Page No.:In france during the old Regime the church toa extracted its sharetexes fromof

Answer»

Peasants were obliged to RENDER services to the LORD – to work in his house and fields – to serve in the ARMY or to participate in building roads. The Church too extracted its SHARE of taxes called tithes from the peasants, and finally, all members of the THIRD estate had to pay taxes to the state.

Discussion

3.	To slow down a Car, a braking force of 1200 N is applied for 10 s. How much force would beneeded to produce the same change in velocity in 6 s.
Answer» ANSWER: 2000 NEWTON EXPLANATION: this is the answer

3.

To slow down a Car, a braking force of 1200 N is applied for 10 s. How much force would beneeded to produce the same change in velocity in 6 s.

Answer»

ANSWER:

2000 NEWTON

EXPLANATION:

this is the answer

Discussion

4.	the plane of a circular coil is horizontal. It has 20 turns each of 8cm radius. A current of 1A flows through its which appears to be clockwise from a point vertically above it. Find the magnitude and direction of the magnetic field at the centre of the coil.
Answer» EXPLAINATION ..here is the answer .formula at centre B=u°iN/2R ..u°=4 PIE ×10^-7. i=1A N=20 R=8×10^-2 metre .. putting all VALUE... B=5pie×10^-5.. . .direction right HAND thumb rule..gives in -K^.

4.

the plane of a circular coil is horizontal. It has 20 turns each of 8cm radius. A current of 1A flows through its which appears to be clockwise from a point vertically above it. Find the magnitude and direction of the magnetic field at the centre of the coil.

Answer»

EXPLAINATION

..here is the answer

.formula at centre B=u°iN/2R

..u°=4 PIE ×10^-7.

i=1A

N=20

R=8×10^-2 metre

..

putting all VALUE...

B=5pie×10^-5..

.

.direction right HAND thumb rule..gives in -K^.

Discussion

5.	What is meant by electric current ? Write its S.I. Units.
Answer» Answer: An electric current is said to exist when there is a NET flow of electric CHARGE through a REGION. ... The SI unit of electric current is the ampere, which is the flow of electric charge across a surface at the rate of one COULOMB per SECOND.

5.

What is meant by electric current ? Write its S.I. Units.

Answer»

Answer:

An electric current is said to exist when there is a NET flow of electric CHARGE through a REGION. ... The SI unit of electric current is the ampere, which is the flow of electric charge across a surface at the rate of one COULOMB per SECOND.

Discussion

6.	the external diameter d1 and internal diameter d2, of a metal tube are found to be (64 ± 2) mm and (47 ± 1) mm respectively. The percentage error in (d1-d2) expected from these readings is at most: A 0.3% B 1% C 5% D 6% E 18%
Answer» Answer: 3℅d56&$E*e~td 5€™={°dzFs€€¢

6.

the external diameter d1 and internal diameter d2, of a metal tube are found to be (64 ± 2) mm and (47 ± 1) mm respectively. The percentage error in (d1-d2) expected from these readings is at most: A 0.3% B 1% C 5% D 6% E 18%

Answer»

Answer:

3℅d56&$E*e~td 5€™={°dzFs€€¢

Discussion

7.	The height of building is 13Meter express this in ft
Answer» Answer: 13 metres = 42 FEET 7.811 inches Explanation: 1m=3feet3.37inches hope it helps you plzz MARK me as UR brainliast ❤️❤️❤️

7.

The height of building is 13Meter express this in ft

Answer»

Answer:

13 metres =

42 FEET 7.811 inches

Explanation:

1m=3feet3.37inches

hope it helps you

plzz MARK me as UR brainliast ❤️❤️❤️

Discussion

8.	Which is best , a parallel connection or a series connection ?
Answer» ᴀᴅᴠᴀɴᴛᴀɢᴇs ᴏғ ʜᴀᴠɪɴɢ ᴀᴘᴘʟɪᴀɴᴄᴇs ɪɴ ᴘᴀʀᴀʟʟᴇʟ ʀᴀᴛʜᴇʀ ᴛʜᴀɴ ɪɴ sᴇʀɪᴇs: ᴛʜᴇ ᴘ.ᴅ (ᴠᴏʟᴛᴀɢᴇ) ᴀᴄʀᴏss ᴇᴀᴄʜ ʟᴀᴍᴘ ɪs ғɪxᴇᴅ, sᴏ ᴛʜᴇ ʟᴀᴍᴘ sʜɪɴᴇs ᴡɪᴛʜ ᴛʜᴇ sᴀᴍᴇ ʙʀɪɢʜᴛɴᴇss, ɪʀʀᴇsᴘᴇᴄᴛɪᴠᴇ ᴏғ ʜᴏᴡ ᴍᴀɴʏ ᴏᴛʜᴇʀ ʟᴀᴍᴘs ᴀʀᴇ sᴡɪᴛᴄʜᴇᴅ ᴏɴ.

8.

Which is best , a parallel connection or a series connection ?

Answer»

ᴀᴅᴠᴀɴᴛᴀɢᴇs ᴏғ ʜᴀᴠɪɴɢ ᴀᴘᴘʟɪᴀɴᴄᴇs ɪɴ ᴘᴀʀᴀʟʟᴇʟ ʀᴀᴛʜᴇʀ ᴛʜᴀɴ ɪɴ sᴇʀɪᴇs: ᴛʜᴇ ᴘ.ᴅ (ᴠᴏʟᴛᴀɢᴇ) ᴀᴄʀᴏss ᴇᴀᴄʜ ʟᴀᴍᴘ ɪs ғɪxᴇᴅ, sᴏ ᴛʜᴇ ʟᴀᴍᴘ sʜɪɴᴇs ᴡɪᴛʜ ᴛʜᴇ sᴀᴍᴇ ʙʀɪɢʜᴛɴᴇss, ɪʀʀᴇsᴘᴇᴄᴛɪᴠᴇ ᴏғ ʜᴏᴡ ᴍᴀɴʏ ᴏᴛʜᴇʀ ʟᴀᴍᴘs ᴀʀᴇ sᴡɪᴛᴄʜᴇᴅ ᴏɴ.

Discussion

9.	Find the gravitational force acting between earth (Me = 6x 10^24 kg) and Moon(Mm =7-34x 10^22 kg) if distance between them is 384,400 Km.
Answer» ANSWER: fG=Gm1m2/r^2 =6.67x10^-11x6x10^24x7.34x10^22/384400^2 SOLVE this EQAUTION

9.

Find the gravitational force acting between earth (Me = 6x 10^24 kg) and Moon(Mm =7-34x 10^22 kg) if distance between them is 384,400 Km.

Answer»

ANSWER:

fG=Gm1m2/r^2

=6.67x10^-11x6x10^24x7.34x10^22/384400^2

SOLVE this EQAUTION

Discussion

10.	The angle between the tangents drawn from the origin to the parabola y^2==4a(x-a) is
Answer» Explanation: LET the equation of the tangent y=mx (SINCE c=0) Putting y=mx in the eqn of PARABOLA m^2x^2=4a(x-a) m^2x^2-4ax+4a^2=0 D=0 (since the tangent cuts the parabola at 1 pt...ROOTS are equal) (4a)^2=4(4a^2)m^2 m=+1 or m=-1 we get the slopes of the 2 tangents as +1 and -1 Product of slopes =-1 Therefore angle between them is 90

10.

The angle between the tangents drawn from the origin to the parabola y^2==4a(x-a) is

Answer»

Explanation:

LET the equation of the tangent y=mx (SINCE c=0)

Putting y=mx in the eqn of PARABOLA

m^2x^2=4a(x-a)

m^2x^2-4ax+4a^2=0

D=0 (since the tangent cuts the parabola at 1 pt...ROOTS are equal)

(4a)^2=4(4a^2)m^2

m=+1 or m=-1

we get the slopes of the 2 tangents as +1 and -1

Product of slopes =-1

Therefore angle between them is 90

Discussion

11.	Dimension of Planck's constant is(B)ML2T-2ML27-1(D)MLT-2(C)MLT-1
Answer» ANSWER : $[ML^2T^{-1}]$ Planck's constant is given by the formula $\tt Planck's\ constant = \dfrac{energy}{<klux>FREQUENCY</klux>}$ $\tt h = \dfrac{e}{ \nu}$ The dimensions of energy E is $[ML^2T^{-2}]$ and DIMENSION of frequency is $[T^{-1}]$ . Using them in the above formula : $\tt h = \dfrac{[ML^2T^{-2}]}{[T^{-1}]}$ $\tt h = [ML^2T^{-1}]$ _________________________ Planck's constant gives the energy radiated by one QUANTA of photon to the frequency of the radiation . Its value of 6.62 × $10^{-34}$ Js. Its SI unit is Joule second . It was given by Planck hence named after him .

11.

Dimension of Planck's constant is(B)ML2T-2ML27-1(D)MLT-2(C)MLT-1

Answer»

ANSWER :

$[ML^2T^{-1}]$

Planck's constant is given by the formula

$\tt Planck's\ constant = \dfrac{energy}{<klux>FREQUENCY</klux>}$

$\tt h = \dfrac{e}{ \nu}$

The dimensions of energy E is $[ML^2T^{-2}]$ and DIMENSION of frequency is $[T^{-1}]$ .

Using them in the above formula :

$\tt h = \dfrac{[ML^2T^{-2}]}{[T^{-1}]}$

$\tt h = [ML^2T^{-1}]$

_________________________

Planck's constant gives the energy radiated by one QUANTA of photon to the frequency of the radiation .

Its value of 6.62 × $10^{-34}$ Js.

Its SI unit is Joule second .

It was given by Planck hence named after him .

Discussion

12.	Why do objects fall towards centre of gravity of earth only...???
Answer» It is also true that a free falling (no air resistance) OBJECT FALLS with an ACCELERATION of 9.8 m/s2—but it's still just the gravitational field. It doesn't MATTER what object you put near the surface of the Earth, the gravitational field due to the Earth is constant and POINTING towards the center of the Earth.

Discussion

13.	Why prisms are used in the telescope
Answer» Answer: A star DIAGONAL, erecting lens or diagonal mirror is an angled mirror or prism used in telescopes that allows viewing from a direction that is PERPENDICULAR to the usual eyepiece AXIS. It allows more convenient and comfortable viewing when the telescope is pointed at, or near the zenith (i.e. directly overhead). HOPE it helps you Please mark it as brainliest

13.

Why prisms are used in the telescope

Answer»

Answer:

A star DIAGONAL, erecting lens or diagonal mirror is an angled mirror or prism used in telescopes that allows viewing from a direction that is PERPENDICULAR to the usual eyepiece AXIS. It allows more convenient and comfortable viewing when the telescope is pointed at, or near the zenith (i.e. directly overhead).

HOPE it helps you

Please mark it as brainliest

Discussion

14.	Explain how defects in a mental block can be detected using ultrasound.
Answer» Answer: Defects in metal BLOCKS do not allow ULTRASOUND to pass through them and they are REFLECTED BACK. This fact is used to detect defects in metal blocks. Explanation: Defects in metal blocks do not allow ultrasound to pass through them and they are reflected back. This fact is used to detect defects in metal blocks. Ultrasound is passed through one end of a metal block and detectors are placed on the other end. The defective PART of the metal block does not allow ultrasound to pass through it. As a result, it will not be detected by the detector. Hence, defects in metal blocks can be detected using ultrasound.

14.

Explain how defects in a mental block can be detected using ultrasound.

Answer»

Answer:

Defects in metal BLOCKS do not allow ULTRASOUND to pass through them and they are REFLECTED BACK. This fact is used to detect defects in metal blocks.

Explanation:

Defects in metal blocks do not allow ultrasound to pass through them and they are reflected back. This fact is used to detect defects in metal blocks. Ultrasound is passed through one end of a metal block and detectors are placed on the other end. The defective PART of the metal block does not allow ultrasound to pass through it. As a result, it will not be detected by the detector. Hence, defects in metal blocks can be detected using ultrasound.

Discussion

15.	Derive an expression for the electric potential and field at a point any wheredue to electric dipole?
Answer» Derive an EXPRESSION for ELECTRIC potential at a POINT due to an electric dipole. ... Let an electric dipole CONSIST of two equal and opposite point charges –q at A and +q at B ,separated by a small distance AB =2A ,with centre at O. Mark me as brainliest and follow me ,(. ❛ ᴗ ❛.)

15.

Derive an expression for the electric potential and field at a point any wheredue to electric dipole?

Answer»

Derive an EXPRESSION for ELECTRIC potential at a POINT due to an electric dipole. ... Let an electric dipole CONSIST of two equal and opposite point charges –q at A and +q at B ,separated by a small distance AB =2A ,with centre at O.

Mark me as brainliest and follow me

,(. ❛ ᴗ ❛.)

Discussion

16.	A body is released from a height of 19.6 m. Find the velocity by which it strikes the groundand also find time taken to reach the ground.
Answer» GiVen h=19.6m u=0 g=9.8m/s² To find i.final VELOCITY(v) ii.TIME Solution-- i.v²-u²=2gh v²-0=2×9.8×19.6 v²=384.16 v=19.6m/s ii.v=u+gt 19.6=0+9.8t 19.6=9.8t t=19.6/9.8 t=2s Thus,velocity by which it srikes the ground is 19.6m/s and time taken is 2 seconds.

16.

A body is released from a height of 19.6 m. Find the velocity by which it strikes the groundand also find time taken to reach the ground.

Answer»

GiVen

h=19.6m

u=0

g=9.8m/s²

To find

i.final VELOCITY(v)

ii.TIME

Solution--

i.v²-u²=2gh

v²-0=2×9.8×19.6

v²=384.16

v=19.6m/s

ii.v=u+gt

19.6=0+9.8t

19.6=9.8t

t=19.6/9.8

t=2s

Thus,velocity by which it srikes the ground is 19.6m/s and time taken is 2 seconds.

Discussion

17.	Current through 10 ohm resistor shown in figure is
Answer» Answer: CONSTANT Explanation: current passing through ohmic resistance will be constant it is VERIFIED by OHM's LAW

17.

Current through 10 ohm resistor shown in figure is

Answer»

Answer:

CONSTANT

Explanation:

current passing through ohmic resistance will be constant it is VERIFIED by OHM's LAW

Discussion

18.	A pipe of copper having an internal cavity weighs 264 in air and 221 gm in water, find the volume of the cavity (density of cavity is 8.8)
Answer» ANSWER: ∴ Mass of water displaced by COPPER PIECE when COMPLETELY immersed in water is equal to 43 GM. Volume of cavity = 43.0 – 30.0 = 13.0 cc.

18.

A pipe of copper having an internal cavity weighs 264 in air and 221 gm in water, find the volume of the cavity (density of cavity is 8.8)

Answer»

ANSWER:

∴ Mass of water displaced by COPPER PIECE when COMPLETELY immersed in water is equal to 43 GM. Volume of cavity = 43.0 – 30.0 = 13.0 cc.

Discussion

19.	Find electric field on the axis of electric dipole? or equater of dipole.
Answer» Answer: Now, suppose that the point P is situated on the right-bisector of the dipole AB at a distance r metre from its mid-point 0 (Fig. (a)] Again Let E 1 and E 2 be the magnitudes of the INTENSITIES of the electric field at P due to the CHARGES +q and −q of the dipole respectively. The distance of P from each charge is r 2 +l 2 . Therefore, and E 1 = 4πε 0 1 (r 2 +l 2 ) q AWAY from +q The magnitudes of E 1 and E 2 are equal (but directions are different). On resolving E 1 and E 2 into two components PARALLEL and perpendicular to AB, the components perpendicular to AB (E 1 sinθandE 2 sinθ) cancel each other (because they are equal and opposite), while the components parallel to AB (E 1 cosθandE 2 cosθ ), being in the same direction, add up [Fig. (b)]. Hence the resultant INTENSITY of electric field at the point P is E=E 1 cosθ+E 2 cosθ = 4πε 0 1 (r 2 +l 2 ) q cosθ+ 4πε 0 1 (r 2 +l 2 ) q cosθ = 4πε 0 1 (r 2 +l 2 ) q 2cosθ But 2ql=p (moment of electric dipole) ∴ = 4πε 0 1 (r 2 +l 2 ) 32 p The direction of electric field E is 'antiparallel' to the dipole axis. If r is very large compared to 2l (r>>2l), then l 2 may be neglected in comparison to r 2 . E= 4πε 0 1 r 3 p Newton/Coulomb

19.

Find electric field on the axis of electric dipole? or equater of dipole.

Answer»

Answer:

Now, suppose that the point P is situated on the right-bisector of the dipole AB at a distance r metre from its mid-point 0 (Fig. (a)]

Again Let E

1

and E

2

be the magnitudes of the INTENSITIES of the electric field at P due to the CHARGES +q and −q of the dipole respectively. The distance of P from each charge is

r

2

+l

2

. Therefore,

and E

1

=

4πε

0

1

(r

2

+l

2

)

q

AWAY from +q

The magnitudes of E

1

and E

2

are equal (but directions are different). On resolving E

1

and E

2

into two components PARALLEL and perpendicular to AB, the components perpendicular to AB (E

1

sinθandE

2

sinθ) cancel each other (because they are equal and opposite), while the components parallel to AB (E

1

cosθandE

2

cosθ ), being in the same direction, add up [Fig. (b)]. Hence the resultant INTENSITY of electric field at the point P is

E=E

1

cosθ+E

2

cosθ

=

4πε

0

1

(r

2

+l

2

)

q

cosθ+

4πε

0

1

(r

2

+l

2

)

q

cosθ

=

4πε

0

1

(r

2

+l

2

)

q

2cosθ

But 2ql=p (moment of electric dipole)

∴ =

4πε

0

1

(r

2

+l

2

)

32

p

The direction of electric field E is 'antiparallel' to the dipole axis.

If r is very large compared to 2l (r>>2l), then l

2

may be neglected in comparison to r

2

.

E=

4πε

0

1

r

3

p

Newton/Coulomb

Discussion

20.	Two charges + 2 micro coulomb and +8micro coulomb are separated by adistance 10cm apart in air where should a thirdcharge +5 micro coulomb be placed so that +5 micro coulomb charge is inequilibrium.Also and intensity of electric field at a point medwayb/w the charges.
Answer» EXPLANATION: ANSWER and explanation given mark my answer as bralinlist❤ I HOPE it HELPFUL

20.

Two charges + 2 micro coulomb and +8micro coulomb are separated by adistance 10cm apart in air where should a thirdcharge +5 micro coulomb be placed so that +5 micro coulomb charge is inequilibrium.Also and intensity of electric field at a point medwayb/w the charges.

Answer»

EXPLANATION:

ANSWER and explanation given

mark my answer as bralinlist❤

I HOPE it HELPFUL

Discussion

21.	Two charges + 2 micro coulomb and +8micro coulomb are separated by adistance 10cm apart in air where should a thirdcharge tshic be placed so that the charge is inequilibriumAlso and intensity of electric field at a point medwayb/w the charges.
Answer» Answer: Given conditions ⇒ q₁ = 12 μC = 12 × 10⁻⁶ C. q₂ = 8 μC = 8 × 10⁻⁶ C. Distance between them(r₁) = 10 cm. = 0.1 m. Final Distance between them(r₂) = 6 cm . = 0.06 m. Work done in bringing the charges UPTO the distance of 6 cm is given by, W = K q₁ q₂ (1/r₂ - 1/r₁) = 9 × 10⁹ × 12 × 10⁻⁶ × 8 × 10⁻⁶(1/0.06 - 1/0.1) = 864 × 10⁻³ (16.67 - 10) = 864 × 10⁻³(6.67) = 5760 × 10⁻³ = 5.76 J.

21.

Two charges + 2 micro coulomb and +8micro coulomb are separated by adistance 10cm apart in air where should a thirdcharge tshic be placed so that the charge is inequilibriumAlso and intensity of electric field at a point medwayb/w the charges.

Answer»

Answer:

Given conditions ⇒

q₁ = 12 μC = 12 × 10⁻⁶ C.

q₂ = 8 μC = 8 × 10⁻⁶ C.

Distance between them(r₁) = 10 cm. = 0.1 m.

Final Distance between them(r₂) = 6 cm . = 0.06 m.

Work done in bringing the charges UPTO the distance of 6 cm is given by,

W = K q₁ q₂ (1/r₂ - 1/r₁)

= 9 × 10⁹ × 12 × 10⁻⁶ × 8 × 10⁻⁶(1/0.06 - 1/0.1)

= 864 × 10⁻³ (16.67 - 10)

= 864 × 10⁻³(6.67)

= 5760 × 10⁻³

= 5.76 J.

Discussion

22.	draw a circuit diagram to connect three 4 ohm resistors in parallel with a 12volt battery made up of 6 volts each cell.
Answer» ANSWER: Here is your answer BUDDY

22.

draw a circuit diagram to connect three 4 ohm resistors in parallel with a 12volt battery made up of 6 volts each cell.

Answer»

ANSWER:

Here is your answer BUDDY

Discussion

23.	A substance having a density of 0.3 g/cm will _________ in/on water
Answer» Answer: YES it can FLOAT Explanation: SUBSTANCES of 0.2 to 0.3 or lower can float on WATER

23.

A substance having a density of 0.3 g/cm will _________ in/on water

Answer»

Answer:

YES it can FLOAT

Explanation:

SUBSTANCES of 0.2 to 0.3 or lower can float on WATER

Discussion

24.	Is kirchoff voltage law is connected with IR drops??
Answer» Explanation: His voltage LAW states that for a closed loop series path the algebraic sum of all the voltages around any closed loop in a circuit is equal to ZERO. ... HENCE any voltage drops around the loop must be equal to any voltage sources MET along the WAY.

24.

Is kirchoff voltage law is connected with IR drops??

Answer»

Explanation:

His voltage LAW states that for a closed loop series path the algebraic sum of all the voltages around any closed loop in a circuit is equal to ZERO. ... HENCE any voltage drops around the loop must be equal to any voltage sources MET along the WAY.

Discussion

25.	The external and internal diameters of a hollow cylinder are measured as (5.32±0.01) cm and (4.98±0.01) cm respectively. The thickness of the cylinder will be – (0.34 ± 0.01) cm (0.17 ± 0.00) cm (0.34 ± 0.02) cm (0.17 ± 0.02) cm
Answer» it is not a MATTER to MAKE ROPE incrafter and MOBILE PHONE

Discussion

26.	Instantaneous velocity is same as the average velocity atall instants for(1) Uniform motion(2) Non-uniform motion(3) Rectilinear motion(4) None of these
Answer» ANSWER: hhhgfddssdddssssssssssssdddddddffffffggghhjjjjjjjjhhhhhhhhvvffffd Explanation: gujgfghkpkgrrcg pls MARK as BRAINLIST

26.

Instantaneous velocity is same as the average velocity atall instants for(1) Uniform motion(2) Non-uniform motion(3) Rectilinear motion(4) None of these

Answer»

ANSWER:

hhhgfddssdddssssssssssssdddddddffffffggghhjjjjjjjjhhhhhhhhvvffffd

Explanation:

gujgfghkpkgrrcg

pls MARK as BRAINLIST

Discussion

27.	What is first law of motion
Answer» Explanation: Newton's first law STATES that an object will remain at rest or in uniform MOTION in a straight line unless acted upon by an EXTERNAL force.

27.

What is first law of motion

Answer»

Explanation:

Newton's first law STATES that an object will remain at rest or in uniform MOTION in a straight line unless acted upon by an EXTERNAL force.

Discussion

28.	Which of the cable will be thicker 5A or 10A give reason
Answer» Answer: 10A Explanation: PLZZ MARK as BRAINLIEST

28.

Which of the cable will be thicker 5A or 10A give reason

Answer»

Answer:

10A

Explanation:

PLZZ MARK as BRAINLIEST

Discussion

29.	a current of 1A is flowing in the sides of an equilateral triangle of side 2m. find the magnetic field at the centroid of the triangle
Answer» Answer: PHYSICS A current 1A is FLOWING in the sides of EQUILATERAL TRIANGLE of SIDE 4.5×!0 −2 m. The magnetic induction at centroid of the triangle is question December 26, 2019 avatar Suseela Kankate Share Save ANSWER Magnetic field at the centroid is given by, B=3 4πa μ 0 I (sinθ 1 +sinθ 2 ) Here, θ 1 =θ 2 =60 Length =4.5×10 −2 m a= 2 1 cot60 = 2 3 4.5×10 −2 Therefore, B= 4.5×10 −2 3×10 −7 ×1×2 3 2 2 3 =4×10 −5 T B=4×10 −5 T Explanation: please mark it brainliest answer and please don't forget to give me a thanks for this answer and follow me also

29.

a current of 1A is flowing in the sides of an equilateral triangle of side 2m. find the magnetic field at the centroid of the triangle

Answer»

Answer:

PHYSICS

A current 1A is FLOWING in the sides of EQUILATERAL TRIANGLE of SIDE 4.5×!0

−2

m. The magnetic induction at centroid of the triangle is

question

December 26, 2019

avatar

Suseela Kankate

Share

Save

ANSWER

Magnetic field at the centroid is given by,

B=3

4πa

μ

0

I

(sinθ

1

+sinθ

2

)

Here, θ

1

=θ

2

=60

Length =4.5×10

−2

m

a=

2

1

cot60

=

2

3

4.5×10

−2

Therefore,

B=

4.5×10

−2

3×10

−7

×1×2

3

2

3

=4×10

−5

T

B=4×10

−5

T

Explanation:

please mark it brainliest answer and please don't forget to give me a thanks for this answer and follow me also

Discussion

30.	Two bodies of masses 10 kg and 20 kg are moving towards each other on the same straightline with velocities 2 m/s and 3 m/s respectively. They both collide and get stick with each other.Find the direction of motion and magnitude of velocity by which they both move together.
Answer» FOLLOW me DEAR for your FUTURE DOUBTS ❤️ ❤️❤️

Discussion

31.	5) Two charges + 2 kee and the are separated by adistance 10cm apart in air where should a thirdcharge tshic be placed so that the charge is inequilibriumAlso and intensity of electric field at a point medwayb/w the charges.
Answer» Answer: Given conditions ⇒ q₁ = 12 μC = 12 × 10⁻⁶ C. q₂ = 8 μC = 8 × 10⁻⁶ C. Distance between them(r₁) = 10 cm. = 0.1 m. Final Distance between them(r₂) = 6 cm . = 0.06 m. Work done in bringing the charges upto the distance of 6 cm is given by, W = k q₁ q₂ (1/r₂ - 1/r₁) = 9 × 10⁹ × 12 × 10⁻⁶ × 8 × 10⁻⁶(1/0.06 - 1/0.1) = 864 × 10⁻³ (16.67 - 10) = 864 × 10⁻³(6.67) = 5760 × 10⁻³ = 5.76 J.

31.

5) Two charges + 2 kee and the are separated by adistance 10cm apart in air where should a thirdcharge tshic be placed so that the charge is inequilibriumAlso and intensity of electric field at a point medwayb/w the charges.

Answer»

Answer:

Given conditions ⇒

q₁ = 12 μC = 12 × 10⁻⁶ C.

q₂ = 8 μC = 8 × 10⁻⁶ C.

Distance between them(r₁) = 10 cm. = 0.1 m.

Final Distance between them(r₂) = 6 cm . = 0.06 m.

Work done in bringing the charges upto the distance of 6 cm is given by,

W = k q₁ q₂ (1/r₂ - 1/r₁)

= 9 × 10⁹ × 12 × 10⁻⁶ × 8 × 10⁻⁶(1/0.06 - 1/0.1)

= 864 × 10⁻³ (16.67 - 10)

= 864 × 10⁻³(6.67)

= 5760 × 10⁻³

= 5.76 J.

Discussion

32.	Help me in this physics of class 8 ....
Answer» Answer: *GOOD* *MORNING* *FRND, here* is *your* *answer* 1-a 2-e 3-d 4-b 5-c *Hope* it *helped* u *plz* *FOLLOW* me

32.

Help me in this physics of class 8 ....

Answer»

Answer:

GOOD MORNING FRND, here is your answer

1-a

2-e

3-d

4-b

5-c

Hope it helped u plz FOLLOW me

Discussion

33.	The equivalent capacitance capacitance from the network shown in the figure isthis question carries 100 points
Answer» EQUIVALENT of C2 c3 is 200 then parallel with C1 gives 300 300 SERIES with c4 gives 30000/400= 300/4 options are wrong I think....... Follow me dear for your future doubts ❤️ ❤️✌️

33.

The equivalent capacitance capacitance from the network shown in the figure isthis question carries 100 points

Answer»

EQUIVALENT of C2 c3 is 200

then parallel with C1 gives 300

300 SERIES with c4 gives 30000/400= 300/4

options are wrong I think.......

Follow me dear for your future doubts ❤️ ❤️✌️

Discussion

34.	100 degree Fahrenheit = _______ degree Celsius
Answer» ANSWER: 38 .............. MARK as BRAINIEST answer

34.

100 degree Fahrenheit = _______ degree Celsius

Answer»

ANSWER:

38 ..............

MARK as BRAINIEST answer

Discussion

35.	If sin theta = 0.74 theta= ?
Answer» ANSWER: Here's your answer-------------

35.

If sin theta = 0.74 theta= ?

Answer»

ANSWER:

Here's your answer-------------

Discussion

36.	a capacitor is fully charged with voltage v and after removing battery one plate is given a charge Q now what is the voltage between two plates?
Answer» Answer: The stored electric charge in a capacitor, Q (in coulombs, abbreviated C) is equal to the product of the capacitance C (in Farads, abbreviated F) of the capacitor, and the voltage V (in volts, abbreviated V) across its terminals. That is, Q = C٠V. For EXAMPLE, if C = 33uF and V = 20V, then Q = (33٠10^-6)٠(20) = 660uC. Because the PLATES are separated by an INSULATING material, charge cannot cross the gap. An equal amount of charge is therefore repelled from the opposite plate, leaving it with a charge that is equal and opposite to the charge on the first plate. The two CONDUCTORS of.

36.

a capacitor is fully charged with voltage v and after removing battery one plate is given a charge Q now what is the voltage between two plates?

Answer»

Answer:

The stored electric charge in a capacitor, Q (in coulombs, abbreviated C) is equal to the product of the capacitance C (in Farads, abbreviated F) of the capacitor, and the voltage V (in volts, abbreviated V) across its terminals. That is, Q = C٠V. For EXAMPLE, if C = 33uF and V = 20V, then Q = (33٠10^-6)٠(20) = 660uC.

Because the PLATES are separated by an INSULATING material, charge cannot cross the gap. An equal amount of charge is therefore repelled from the opposite plate, leaving it with a charge that is equal and opposite to the charge on the first plate. The two CONDUCTORS of.

Discussion

37.	women and beautiful are electric potential intensity inside a liquid at temperature T1 and t2 to T1 is greater than 22 then V1 V2 is greater than is equal to
Answer» Answer: Electric Potential The electric potential energy per unit CHARGE is V=\frac{U}{Q}. Since U is proportional to q, the dependence on q CANCELS. Thus, V does not depend on q. The change in potential energy \text{Δ}U is crucial, so we are concerned with the difference in potential or potential difference \text{Δ}V between two points, where \text{Δ}V={V}_{B}-{V}_{A}=\frac{\text{Δ}U}{q}. Electric Potential Difference The electric potential difference between points A and B, {V}_{B}-{V}_{A}, is defined to be the change in potential energy of a charge q moved from A to B, divided by the charge. Units of potential difference are joules per coulomb, given the name volt (V) after Alessandro Volta. 1\phantom{\rule{0.2em}{0ex}}\text{V}=1\phantom{\rule{0.2em}{0ex}}\text{J/C} The familiar term voltage is the COMMON name for electric potential difference. Keep in mind that whenever a voltage is quoted, it is understood to be the potential difference between two points. For example, every battery has two TERMINALS, and its voltage is the potential difference between them.

37.

women and beautiful are electric potential intensity inside a liquid at temperature T1 and t2 to T1 is greater than 22 then V1 V2 is greater than is equal to

Answer»

Answer:

Electric Potential

The electric potential energy per unit CHARGE is

V=\frac{U}{Q}.

Since U is proportional to q, the dependence on q CANCELS. Thus, V does not depend on q. The change in potential energy \text{Δ}U is crucial, so we are concerned with the difference in potential or potential difference \text{Δ}V between two points, where

\text{Δ}V={V}_{B}-{V}_{A}=\frac{\text{Δ}U}{q}.

Electric Potential Difference

The electric potential difference between points A and B, {V}_{B}-{V}_{A}, is defined to be the change in potential energy of a charge q moved from A to B, divided by the charge. Units of potential difference are joules per coulomb, given the name volt (V) after Alessandro Volta.

1\phantom{\rule{0.2em}{0ex}}\text{V}=1\phantom{\rule{0.2em}{0ex}}\text{J/C}

The familiar term voltage is the COMMON name for electric potential difference. Keep in mind that whenever a voltage is quoted, it is understood to be the potential difference between two points. For example, every battery has two TERMINALS, and its voltage is the potential difference between them.

Discussion

38.	Is this circuit in series or parallel
Answer» ANSWER: CIRCUIT is SERIES PARALLEL

38.

Is this circuit in series or parallel

Answer»

ANSWER:

CIRCUIT is SERIES PARALLEL

Discussion

39.	State one way to obtain a greater moment of a forceabout a given axis of rotation.
Answer» Explanation: To obtain a greater MOMENT of force about a GIVEN axis of ROTATION the force should be APPLIED at the maximum distance from the axis and by increasing the magnitude of the force

39.

State one way to obtain a greater moment of a forceabout a given axis of rotation.

Answer»

Explanation:

To obtain a greater MOMENT of force about a GIVEN axis of ROTATION the force should be APPLIED at the maximum distance from the axis and by increasing the magnitude of the force

Discussion

40.	What is linear motion???. pls give ans in easy language.
Answer» Answer: hii.. EXPLANATION: Linear EQUATION means equation in which two variables gives a straight LINE on the GRAPH..... May it helps you...

40.

What is linear motion???. pls give ans in easy language.

Answer»

Answer:

hii..

EXPLANATION:

Linear EQUATION means equation in which two variables gives a straight LINE on the GRAPH.....

May it helps you...

Discussion

41.	Equi potential surface are perpendicular to field line Wohy?
Answer» ANSWER: sfgghhgwethvcdaqqrhlp8742227

41.

Equi potential surface are perpendicular to field line Wohy?

Answer»

ANSWER:

sfgghhgwethvcdaqqrhlp8742227

Discussion

42.	9. State one way to obtain a greater moment of a forceabout a given axis of rotation.
Answer» Moment of force is also called Torque represented by $\tau$ . It can be defined as the PRODUCT of force and perpendicular distance between the line of force and axis of ROTATION . Torque = Force × Perpendicular distance In vector FORM , $\tt \vec{\tau} = \vec{r}\times \vec{f}$ The moment of force , hence , BECOMES DIRECTLY proportional to the force and perpendicular distance . Therefore , to increase moment of force , following of the two could be done : 1) The magnitude of the force could be made larger . 2) The distance between axis of rotation and line of force could be increased . SI unit of torque is Nm .

42.

9. State one way to obtain a greater moment of a forceabout a given axis of rotation.

Answer»

Moment of force is also called Torque represented by $\tau$ .

It can be defined as the PRODUCT of force and perpendicular distance between the line of force and axis of ROTATION .

Torque = Force × Perpendicular distance

In vector FORM ,

$\tt \vec{\tau} = \vec{r}\times \vec{f}$

The moment of force , hence , BECOMES DIRECTLY proportional to the force and perpendicular distance .

Therefore , to increase moment of force , following of the two could be done :

1) The magnitude of the force could be made larger .

2) The distance between axis of rotation and line of force could be increased .

SI unit of torque is Nm .

Discussion

43.	2AAmteĘ RcheInuseven circuitlarocalculate-Chrough 5 ohmgiotoKirchoff's(1) current(18) valueFR
Answer» ANSWER: SORRY but I can't understand the QUSTION and the language

43.

2AAmteĘ RcheInuseven circuitlarocalculate-Chrough 5 ohmgiotoKirchoff's(1) current(18) valueFR

Answer»

ANSWER:

SORRY but I can't understand the QUSTION and the language

Discussion

44.	We can absorb ink using a piece of chalk? How it is posible?
Answer» $\mathcal{\huge{\underline{\underline{\red{Question:-}}}}}$ Q. We can absorb ink using a piece of chalk? How it is POSIBLE? $\mathcal{\huge{\underline{\underline{\green{Answer:-}}}}}$ ✒ It is POSSIBLE to absorb ink using a piece of chalk.We can prove it experimentally. ✏Aim :- To absorb ink using a piece of chalk ✏Material Required :- Chalk, Inkpot, Dropper ▶Theory :- If a component of the gas mixture, transferred to liquid, is a gas at operating condition of mass transfer, then it is CALLED Absorption . ⭐Procedure :- Take a piece of chalk. Take inkpot & dropper PUT little amount of ink & repeat the process till observe. ✏Observation :- The chalk took color of ink. ✏Conclusion :- It's possible to absorb ink using a piece of chalk. ✏Precautions :- Wear gloves . Use aprain. Do it on a piece of newspaper. ⬛ Hence, Proved , We can absorb ink using a piece of chalk. ✔ ________________________________

44.

We can absorb ink using a piece of chalk? How it is posible?

Answer»

$\mathcal{\huge{\underline{\underline{\red{Question:-}}}}}$

Q. We can absorb ink using a piece of chalk? How it is POSIBLE?

$\mathcal{\huge{\underline{\underline{\green{Answer:-}}}}}$

✒ It is POSSIBLE to absorb ink using a piece of chalk.We can prove it experimentally.

✏Aim :- To absorb ink using a piece of chalk

✏Material Required :- Chalk, Inkpot, Dropper

▶Theory :- If a component of the gas mixture, transferred to liquid, is a gas at operating condition of mass transfer, then it is CALLED Absorption .

⭐Procedure :-

Take a piece of chalk.
Take inkpot & dropper
PUT little amount of ink & repeat the process till observe.

✏Observation :- The chalk took color of ink.

✏Conclusion :- It's possible to absorb ink using a piece of chalk.

✏Precautions :-

Wear gloves .
Use aprain.
Do it on a piece of newspaper.

⬛ Hence, Proved , We can absorb ink using a piece of chalk. ✔

________________________________

Discussion

45.	Why null vector is a vector?plz answe it in 20-30 words
Answer» ANSWER: A vector is represented by direction and MAGNITUDE. If we take the number 0, it has no magnitude, and it can be given any sign. Similarly, null vector, also KNOWN as zero vector has no magnitude but can be given a direction. ... It MEANS that the vector is pointing in a certain direction but is still there. Explanation: Mark me as a brainliest

45.

Why null vector is a vector?plz answe it in 20-30 words

Answer»

ANSWER:

A vector is represented by direction and MAGNITUDE. If we take the number 0, it has no magnitude, and it can be given any sign. Similarly, null vector, also KNOWN as zero vector has no magnitude but can be given a direction. ... It MEANS that the vector is pointing in a certain direction but is still there.

Explanation:

Mark me as a brainliest

Discussion

46.	The equation of motion v=u+at can be applied in which of the following cases
Answer» Answer: v = u + at Explanation: v = u + at can be applied when we have to FIND :- 1. final velocity when INITIAL velocity , acceleration ANT time is GIVEN. 2. initial velocity when final velocity , acceleration and time is given. 3. acceleration when initial velocity, final velocity and time is given. 4. time when initial velocity, acceleration and final velocity is given.

46.

The equation of motion v=u+at can be applied in which of the following cases

Answer»

Answer:

v = u + at

Explanation:

v = u + at can be applied when we have to FIND :-

1. final velocity when INITIAL velocity , acceleration ANT time is GIVEN.

2. initial velocity when final velocity , acceleration and time is given.

3. acceleration when initial velocity, final velocity and time is given.

4. time when initial velocity, acceleration and final velocity is given.

Discussion

47.	Find atmospheric pressure 1.0*10^5N/m^2 value in CGS system
Answer» 1 N/m^2 = 10 dyne/cm^2 Therefore 1 atmospheric pressure = 1.0110^6 dyne/cm^2 in CGS system Explanation:* HOPE SO IT HELPS U MARK AS BRAINLIEST. PLZ FOLLOW ME GIVE THANKS TO MY ANSWER GOOD LUCK☺✌

47.

Find atmospheric pressure 1.0*10^5N/m^2 value in CGS system

Answer»

1 N/m^2 = 10 dyne/cm^2

Therefore

1 atmospheric pressure = 1.01*10^6 dyne/cm^2 in CGS system

Explanation:

HOPE SO IT HELPS U

MARK AS BRAINLIEST.

PLZ FOLLOW ME

GIVE THANKS TO MY ANSWER

GOOD LUCK☺✌

Discussion

48.	A piece of brass(alloy of zinc and copper weighs 12.9 gram in air when completely immersed in water, it weighs 11.3 gram. What is the mass of copper in the alloy And and I will mark u brain list
Answer» A piece of BRASS ( ALLOY of COPPER and zinc) WEIGHS 12.9 gram in air. When completely immersed in water it weighs 11.3 G... brainly.in/question/6997128?utm_source=android&utm_medium=share&utm_campaign=question

48.

A piece of brass(alloy of zinc and copper weighs 12.9 gram in air when completely immersed in water, it weighs 11.3 gram. What is the mass of copper in the alloy And and I will mark u brain list

Answer»

A piece of BRASS ( ALLOY of COPPER and zinc) WEIGHS 12.9 gram in air. When completely immersed in water it weighs 11.3 G...

brainly.in/question/6997128?utm_source=android&utm_medium=share&utm_campaign=question

Discussion

49.	Find number of erg in 10 joule
Answer» Explanation: 1 JOULE= 10^7 erg . Like all derived units of the CGS system, the erg is DEPRECATED and SI units should be USED instead (see SI BROCHURE, section 4.1, table 9). BUT , both are in CGS system.

49.

Find number of erg in 10 joule

Answer»

Explanation:

1 JOULE= 10^7 erg . Like all derived units of the CGS system, the erg is DEPRECATED and SI units should be USED instead (see SI BROCHURE, section 4.1, table 9). BUT , both are in CGS system.

Discussion

50.	he percentage error in the measurement of mass and velocity of an object are 3 % and 5 % respectively. The percentage error in the measurement of the kinetic energy is
Answer» Answer: The PERCENTAGE errors in the measurement of mass and SPEED Percentage error in the measurement of mass and speed are 2% and 3% RESPECTIVELY. The error in the measurement of kinetic energy OBTAINED by measuring mass and speed will be. ∴% error in K= (% error in m) +2(% error in v). Explanation: please mark me as a BRAINLIEST..

50.

he percentage error in the measurement of mass and velocity of an object are 3 % and 5 % respectively. The percentage error in the measurement of the kinetic energy is

Answer»

Answer:

The PERCENTAGE errors in the measurement of mass and SPEED

Percentage error in the measurement of mass and speed are 2% and 3% RESPECTIVELY. The error in the measurement of kinetic energy OBTAINED by measuring mass and speed will be. ∴% error in K= (% error in m) +2(% error in v).

Explanation:

please mark me as a BRAINLIEST..

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

The prefix 'milli 'represents ________factor and explain plx​

Page No.:In france during the old Regime the church toa extracted its sharetexes fromof​

To slow down a Car, a braking force of 1200 N is applied for 10 s. How much force would beneeded to produce the same change in velocity in 6 s.​

the plane of a circular coil is horizontal. It has 20 turns each of 8cm radius. A current of 1A flows through its which appears to be clockwise from a point vertically above it. Find the magnitude and direction of the magnetic field at the centre of the coil.​

EXPLAINATION

What is meant by electric current ? Write its S.I. Units.​

An electric current is said to exist when there is a NET flow of electric CHARGE through a REGION. ... The SI unit of electric current is the ampere, which is the flow of electric charge across a surface at the rate of one COULOMB per SECOND.

the external diameter d1 and internal diameter d2, of a metal tube are found to be (64 ± 2) mm and (47 ± 1) mm respectively. The percentage error in (d1-d2) expected from these readings is at most: A 0.3% B 1% C 5% D 6% E 18%​

The height of building is 13Meter express this in ft​

Which is best , a parallel connection or a series connection ?

Find the gravitational force acting between earth (Me = 6x 10^24 kg) and Moon(Mm =7-34x 10^22 kg) if distance between them is 384,400 Km.​

The angle between the tangents drawn from the origin to the parabola y^2==4a(x-a) is

Dimension of Planck's constant is(B)ML2T-2ML27-1(D)MLT-2(C)MLT-1​

ANSWER :

_________________________

Why do objects fall towards centre of gravity of earth only...???​

Why prisms are used in the telescope​

HOPE it helps you

Please mark it as brainliest

Explain how defects in a mental block can be detected using ultrasound.

Derive an expression for the electric potential and field at a point any wheredue to electric dipole?​

Derive an EXPRESSION for ELECTRIC potential at a POINT due to an electric dipole. ... Let an electric dipole CONSIST of two equal and opposite point charges –q at A and +q at B ,separated by a small distance AB =2A ,with centre at O.

A body is released from a height of 19.6 m. Find the velocity by which it strikes the groundand also find time taken to reach the ground.​

GiVen

To find

Solution--

Current through 10 ohm resistor shown in figure is​

A pipe of copper having an internal cavity weighs 264 in air and 221 gm in water, find the volume of the cavity (density of cavity is 8.8)

Find electric field on the axis of electric dipole? or equater of dipole.​

Two charges + 2 micro coulomb and +8micro coulomb are separated by adistance 10cm apart in air where should a thirdcharge +5 micro coulomb be placed so that +5 micro coulomb charge is inequilibrium.Also and intensity of electric field at a point medwayb/w the charges.​

Two charges + 2 micro coulomb and +8micro coulomb are separated by adistance 10cm apart in air where should a thirdcharge tshic be placed so that the charge is inequilibriumAlso and intensity of electric field at a point medwayb/w the charges.​

draw a circuit diagram to connect three 4 ohm resistors in parallel with a 12volt battery made up of 6 volts each cell.​

A substance having a density of 0.3 g/cm will _________ in/on water​

Is kirchoff voltage law is connected with IR drops??​

The external and internal diameters of a hollow cylinder are measured as (5.32±0.01) cm and (4.98±0.01) cm respectively. The thickness of the cylinder will be – (0.34 ± 0.01) cm (0.17 ± 0.00) cm (0.34 ± 0.02) cm (0.17 ± 0.02) cm

Instantaneous velocity is same as the average velocity atall instants for(1) Uniform motion(2) Non-uniform motion(3) Rectilinear motion(4) None of these​

What is first law of motion​

Which of the cable will be thicker 5A or 10A give reason​

a current of 1A is flowing in the sides of an equilateral triangle of side 2m. find the magnetic field at the centroid of the triangle​

Two bodies of masses 10 kg and 20 kg are moving towards each other on the same straightline with velocities 2 m/s and 3 m/s respectively. They both collide and get stick with each other.Find the direction of motion and magnitude of velocity by which they both move together.​

5) Two charges + 2 kee and the are separated by adistance 10cm apart in air where should a thirdcharge tshic be placed so that the charge is inequilibriumAlso and intensity of electric field at a point medwayb/w the charges.​

Help me in this physics of class 8 ....​

The equivalent capacitance capacitance from the network shown in the figure isthis question carries 100 points​

100 degree Fahrenheit = _______ degree Celsius​

If sin theta = 0.74 theta= ?​

Here's your answer-------------

a capacitor is fully charged with voltage v and after removing battery one plate is given a charge Q now what is the voltage between two plates?​

women and beautiful are electric potential intensity inside a liquid at temperature T1 and t2 to T1 is greater than 22 then V1 V2 is greater than is equal to​

Is this circuit in series or parallel​

State one way to obtain a greater moment of a forceabout a given axis of rotation.​

What is linear motion???. pls give ans in easy language.

Equi potential surface are perpendicular to field line Wohy?​

9. State one way to obtain a greater moment of a forceabout a given axis of rotation.​

2AAmteĘ RcheInuseven circuitlarocalculate-Chrough 5 ohmgiotoKirchoff's(1) current(18) valueFR​

We can absorb ink using a piece of chalk? How it is posible?

Why null vector is a vector?plz answe it in 20-30 words​

The equation of motion v=u+at can be applied in which of the following cases

Find atmospheric pressure 1.0*10^5N/m^2 value in CGS system

A piece of brass(alloy of zinc and copper weighs 12.9 gram in air when completely immersed in water, it weighs 11.3 gram. What is the mass of copper in the alloy And and I will mark u brain list

Find number of erg in 10 joule

1 JOULE= 10^7 erg . Like all derived units of the CGS system, the erg is DEPRECATED and SI units should be USED instead (see SI BROCHURE, section 4.1, table 9). BUT , both are in CGS system.

he percentage error in the measurement of mass and velocity of an object are 3 % and 5 % respectively. The percentage error in the measurement of the kinetic energy is

The PERCENTAGE errors in the measurement of mass and SPEED

Percentage error in the measurement of mass and speed are 2% and 3% RESPECTIVELY. The error in the measurement of kinetic energy OBTAINED by measuring mass and speed will be. ∴% error in K= (% error in m) +2(% error in v).

please mark me as a BRAINLIEST..

The prefix 'milli 'represents ________factor and explain plx

Page No.:In france during the old Regime the church toa extracted its sharetexes fromof

To slow down a Car, a braking force of 1200 N is applied for 10 s. How much force would beneeded to produce the same change in velocity in 6 s.

the plane of a circular coil is horizontal. It has 20 turns each of 8cm radius. A current of 1A flows through its which appears to be clockwise from a point vertically above it. Find the magnitude and direction of the magnetic field at the centre of the coil.

What is meant by electric current ? Write its S.I. Units.

the external diameter d1 and internal diameter d2, of a metal tube are found to be (64 ± 2) mm and (47 ± 1) mm respectively. The percentage error in (d1-d2) expected from these readings is at most: A 0.3% B 1% C 5% D 6% E 18%

The height of building is 13Meter express this in ft

Find the gravitational force acting between earth (Me = 6x 10^24 kg) and Moon(Mm =7-34x 10^22 kg) if distance between them is 384,400 Km.

Dimension of Planck's constant is(B)ML2T-2ML27-1(D)MLT-2(C)MLT-1

Why do objects fall towards centre of gravity of earth only...???

Why prisms are used in the telescope

Derive an expression for the electric potential and field at a point any wheredue to electric dipole?

A body is released from a height of 19.6 m. Find the velocity by which it strikes the groundand also find time taken to reach the ground.

Current through 10 ohm resistor shown in figure is

Find electric field on the axis of electric dipole? or equater of dipole.

Two charges + 2 micro coulomb and +8micro coulomb are separated by adistance 10cm apart in air where should a thirdcharge +5 micro coulomb be placed so that +5 micro coulomb charge is inequilibrium.Also and intensity of electric field at a point medwayb/w the charges.

Two charges + 2 micro coulomb and +8micro coulomb are separated by adistance 10cm apart in air where should a thirdcharge tshic be placed so that the charge is inequilibriumAlso and intensity of electric field at a point medwayb/w the charges.

draw a circuit diagram to connect three 4 ohm resistors in parallel with a 12volt battery made up of 6 volts each cell.

A substance having a density of 0.3 g/cm will _________ in/on water

Is kirchoff voltage law is connected with IR drops??

Instantaneous velocity is same as the average velocity atall instants for(1) Uniform motion(2) Non-uniform motion(3) Rectilinear motion(4) None of these

What is first law of motion

Which of the cable will be thicker 5A or 10A give reason

a current of 1A is flowing in the sides of an equilateral triangle of side 2m. find the magnetic field at the centroid of the triangle

Two bodies of masses 10 kg and 20 kg are moving towards each other on the same straightline with velocities 2 m/s and 3 m/s respectively. They both collide and get stick with each other.Find the direction of motion and magnitude of velocity by which they both move together.

5) Two charges + 2 kee and the are separated by adistance 10cm apart in air where should a thirdcharge tshic be placed so that the charge is inequilibriumAlso and intensity of electric field at a point medwayb/w the charges.

Help me in this physics of class 8 ....

The equivalent capacitance capacitance from the network shown in the figure isthis question carries 100 points

100 degree Fahrenheit = _______ degree Celsius

If sin theta = 0.74 theta= ?

a capacitor is fully charged with voltage v and after removing battery one plate is given a charge Q now what is the voltage between two plates?

women and beautiful are electric potential intensity inside a liquid at temperature T1 and t2 to T1 is greater than 22 then V1 V2 is greater than is equal to

Is this circuit in series or parallel

State one way to obtain a greater moment of a forceabout a given axis of rotation.

Equi potential surface are perpendicular to field line Wohy?

9. State one way to obtain a greater moment of a forceabout a given axis of rotation.

2AAmteĘ RcheInuseven circuitlarocalculate-Chrough 5 ohmgiotoKirchoff's(1) current(18) valueFR

Why null vector is a vector?plz answe it in 20-30 words