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ANSWER:

H = vit

so we have to find i

I=v/r

l=6/4

l= 3/2

apply to FORMULA

h=vit

h=6×3/2×5

h=45joules

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ANSWER:

HOPE YOU LIKE IT SO KEEP SMILING

Explanation:

Quantities independent of other PHYSICAL quantities are KNOW as fundamental physical quantities.

There are 7 fundamental physical quantities.

Length.

Mass

Time

Electric current

Thermodynamic temperature

Amount of substance

Luminous INTENSITY

The pitch is determined by the frequency of the VIBRATING body. Pitch is the highness or lowness of a SOUND. The pitch we HEAR depends on the frequency of the sound waves with the amplitude UNCHANGED. The higher the frequency, the higher the pitch; the LOWER the frequency, the lower the pitch

ANSWER:

OPTION a is reqiired answer.....

EXPLANATION:

. Why does a compass needle get deflected when brought near a BAR magnet?

ANS. A compass needle is a small bar magnet with north and south pole. The compass needle deflects due to repulsion/attraction with the bar magnet.

2. Draw magnetic field lines around a bar magnet.

Ans.

3. List the properties of magnetic lines of force.

Ans. Properties of magnetic field lines of force:

(i) Magnetic field lines travel from N-pole of magnet TOWARDS 5-pole, outside the magnet and from S-pole to N-pole inside the magnet.

(ii) The strength of magnet/magnetic field is given by how close the field lines are if the field lines are CLOSER magnet is stronger.

(iii) No two magnetic field lines ever intersect each other.

ANSWER:

1

Secondary School PHYSICS 5 points

4.

Find the ACCELERATION of the BLOCKS A and B in the three situations shown in figure. (Neglect Friction)

A IS 2KG B IS 5 KG

Ask for details Follow Report by ShadDJ 16.08.2019

Answers

Me · Beginner

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Acekiller

Acekiller Expert

Answer:

very easy

the answer is 10g/13

Explanation:

let the tension on block A be T

therefore

the tension on the string connected to block B will be 2T

for block A

T=2a

therefore

2T=4a. --------(I)

for block B

mg-2T=5a

now let acceleration of block A be a so acceleration of block b will be a/2

now substitute the value

5g-2T=5a/2. --------(II)

from eqn I and II we get 5g-5a/2=4a

solve it and you will get a = 10g/13

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for more clear idea I am attaching the

ROBERT HOOK DISCOVERED CELL in 1665

EXPLANATION:

I think it will be 8.666......

plz make it BRAIN list

ANSWER:

WRONG question

Explanation:

Answer:

it DEPENDS on how dhoni will will JUMP and catch the BALL and out VIRAT kohli

Answer:

Pressure is the ratio of force to the surface AREA over which it is exerted. Though solids exert pressure, the most interesting examples of pressure involve fluids—that is, gases and liquids—and in particular water and air. Pressure plays a number of important roles in daily life, among them its function in the operation of PUMPS and hydraulic presses. The maintenance of ORDINARY air pressure is essential to HUMAN health and well-being: the body is perfectly suited to the ordinary pressure of the atmosphere, and if that pressure is altered significantly, a person may experience harmful or EVEN fatal side-effects.

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Answer:

this is common THING yr open your book and see the diagrams if U can't understand by diagrams or explanation of diagrams then ask me I will help you

Given :

Speed of motorcycle = X km/hr

Speed of JEEP of policemen = 40 km/hr

Policemen started chasing thief after 4 hour and catches the thief in 4 hour.

To FIND :

Speed of motorcycle.

Solution :    

When policemen catches the thief jeep then distance traveled by both thief and policemen will be same.

Time TAKEN by thief = 4+4 = 8 hour

Distance traveled in hour hour = x×8 = 8X km

Time taken by policemen = 4 hour

Distance traveled by policemen jeep = 4×40 = 160 km

As both the distance is same

Therefore

x = 20 km/hr

So speed of thief will be 20 km/hr

HI DEAR☺

1687: NEWTONIAN gravity

1687: Newtonian gravityIsaac Newton publishes Philosophiae Naturalis Principia Mathematica, giving a COMPREHENSIVE ACCOUNT of gravity. This gave ASTRONOMERS an accurate toolbox for predicting the motions of planets. But it was not without its problems, such as calculating the PRECISE orbit of the planet Mercury.

ANSWER:

ACTUALLY you PICTURE is not CLEAR

Answer:

HI DEAR☺

UR ANSWER IS HERE

Nondisjunction is the failure of homologous chromosomes or sister chromatids to SEPARATE properly during cell DIVISION. ... Nondisjunction results in daughter cells with ABNORMAL chromosome NUMBERS (ANEUPLOIDY).

hope it help u

plzzz make me as brainlest plzzz

Please RIGHT the PROPER sign of Radius of curvature and again Post the question.

I HOPE this HELPS (θ‿θ)

ANSWER:

ANSWER:

u=0 distance =20m in first 2 seconds

therefore SPEED = d/t I.e. 20/2= 10m/a

u=0 distance = 160M 8n NEXT 4 seconds

therefore velocity after 7 seconds from start =160+20/4+2=

180/6=30 the velocity after 7 seconds of start is 30m/s

Answer:

A body is SAID to be in equilibrium if the net force acting on the body is zero. By NEWTON's second law, the acceleration of such OBJECTS will be zero. Zero acceleration implies a constant velocity. So an OBJECT in equilibrium can either have zero velocity or a constant non-zero velocity.

Explanation:

HERE IS YOUR ANSWER MATE

THE ANGLE IS 0 .

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The extent to which the COLLECTOR current IC is stabilized with varying ICO is measured by a stability factor S. It is defined as the rate of change of collector current IC with respect to the collector base leakage current ICO, keeping both the current IB and the current gain β constant.

S=∂IC∂ICO=dICdICO=ΔICΔICO

The collector current for a CE amplifier is given by

IC=βIB+(1+β)ICO

Differentiating the above equation with respect to IC, we get

I =β(dIB)(dIC)+(1+β)(dICO)(dIC)

Therefore, 1−β(dIB)(dIC)=1+βS

S = ((1+β))((1−β(dIB)(dIC)

From this equation it is clear that this factor S should be as small as possible to have better thermal stability.

Stability factor S’ and S”:

The Stability factor S’ is defined as the rate of change of IC with VBE, keeping ICO and β constant.

S’=∂IC∂VBE=ΔICΔVBE

The stability factor S” is defined as the rate of change of IC with respect to β, keeping ICO and VBE constant.

S’=∂IC∂β=ΔICΔβ

The small VALUE of stability factor INDICATES good bias stability whereas large value of stability factor indicates poor bias stability. Ideal value of stability factor is zero.

For fixed bias stability factor reduces to

S = 1 + β

Since β is large quantity, this is a very poor bias stable circuit.

For collector to base bias stability factor is

S =((1+β))(1+β(RC(Rc+RB))

As can be seen, this value of the stability factor is smaller than the value obtained by fixed bias circuit.

For self-bias,

S =(1+β)(1+RBRE)(1+β+RBRE)

As can be seen, the value of S is equal to one if the ratio RB/RE is very small as compared to 1. As this ratio becomes comparable to unity, and beyond towards infinity, the value of the stability factor goes on increasing till S = 1 + β. This improvement is the stability up to a factor equal to 1 is achieved at the cost of POWER dissipation.

Answer:

LAWS of refraction state that: The incident ray, reflected ray and the NORMAL, to the interface of any two GIVEN mediums; all lie in the same PLANE. The ratio of the sine of the ANGLE of incidence and sine of the angle of refraction is constant.

Explanation:

Explanation:

Define atmospheric pressure?

ANS-the pressure exerted by the air is CALLED atmospheric pressure. it is also called barometric pressure.

write the unit of pressure?

ANS-the SI unit for pressure is the Pascal (pa) EQUAL to ONE NEWTON PER square metre (N/m^2

hope it helps you mate

ANSWER:

metal

Explanation:

Explanation:

R1 =30 ohm

R2 =30 ohm

R3 =30 ohm

R

R2 and R3 are in SERIES

Req = R2 + R3

= 30+ 30

=60 ohm

Now R1 and Req become parallel

1/R = 1/R1 +1/Req

= 1/30 +1/60

= 2+1/60

= 3/60

= 1/20

R= 20 ohm

Given V =2 v

I = V/ R

= 2/20

= 1/10 Ampere ANS.

Answer:

Dear Mate !

Explanation:

HDTV MONITOR refers to a monitor or display with the FOLLOWING minimum performance attributes: Display Scanning Format – Has active vertical scanning lines of 720 progressive (720p), 1080 interlaced (1080i) or higher.

Hope this answer HELPS you.

Mark this answer as BRAINLIEST answer.

ANSWER:

motion

Explanation:

Answer:

SINCE the solids are more COMPACTLY PACKED so on HEATING there will be less EXPANSION are compared to liquid and gas .

electric potential energy WOULD be zero

we have to calculate potential energy when a point CHARGE Q is placed on the EQUATOR of a short DIPOLE of dipole moment P at a distance r from it.

we know, potential energy , U = charge × potential difference.

electric potential at a point on equatorial line of a dipole P, V = Kpcos90°/r² = 0

[ in case of equatorial line, angle between dipole moment and r is 90° ]

distance of charge from the point on equatorial plane remains constant. so, potential difference on equatorial line , ∆V = 0

so, electric potential energy, U = Q × 0

= 0

therefore, electric potential energy would be zero

ANSWER:

Dielectric CONSTANT for AIR or vaccum is 1. .....

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Explanation:

it is a TYPE of vector QUANTITY, HOPE it helps u

ANSWER:

EXPANSION

Explanation:

The initial speed of both the stones are same. Even the STONE is thrown vertically upwards or downwards, their VELOCITY at the ground is the same.

Here the two stones are considered simultaneously.

Given,

because one is projected vertically upwards while the other, downwards. We consider DOWNWARD motion as positive.

Both the stones EXPERIENCE the ACCELERATION due to gravity.

The stones have to travel the height of the building as the displacement to reach the ground.

Then, by third equation of motion,

We consider vertical motion of the ball, where,

• vertical velocity of the ball

We consider upward motion as POSITIVE.

• acceleration acting on the ball

Let the ball come back to the ground after a time seconds of rising up.

On coming back to the ground, the ball attains a zero vertical displacement. Hence by second EQUATION of motion,

Since

So the ball should reach the ground after 6 seconds. This time should be taken by Dhoni too, as minimum, to catch the ball.

Now we have to check WHETHER Dhoni should reach there to catch the ball, by covering the distance of 3 m in 6 seconds or not.

• Displacement to be covered by Dhoni

• Dhoni's speed

• Dhoni experiences no acceleration.

Hence, by second equation of motion,

Therefore, Dhoni will be ABLE to catch the ball!

ANSWER:

(1) ONE one is the RIGHT answer

EXPLANATION:

R =d/2

45/2

22.5degrees

Explanation:

It is because RULER will MEASURE the ACCURATE lengths but with hand SPAN it is unable to measure the lengths accurate

ANSWER:

MULTIPLE Motion

Explanation:

HOPE it HELPS U

ANSWER:

CHANGE in WEATHER is CHEMICAL change

Answer:

0 ° ANGLE

J

Hope it HELPS

ANSWER:

there are MANY types of motion LIKE

translational

rotational

PERIODIC and

NON periodic

Answer:

GO GOOGLE it!!!! it's not a RIGHT place to ask it!!

Answer:

in freefall condition u=0 for both they TAKE same time to reach on ground H=u×t+1/2gt^2 here u is zero and g is -g for DIRECTIONS PURPOSE and h is 20 m so 20=-1/2×10×t^2 then t is 2 SEC for both then velocity on reach the ground is ALSO equal v=u+gt here g is negative and u is zero then v=-gt v=10×2 20 m/s and - is just show direction

ANSWER:

a) rotatory and translatory

b) REVOLUTION

C)rotational and rectilinear

The corresponding values of torque on DIPOLES are F+ = + Q.E sin θ and F- = - q.E sin θ

Explanation:

As we know that the dipole MOMENT is

p = q E

E is the electric field and q is the charge.

Now we know that

Torque = Force x distance

τ = q.E d sin θ

The value of torque on POSITIVE and negative charges.

F+ = + q E sinθ

F - = - q E sin θ

ANSWER:

Displacement of hiker=13km and DIRECTION is SOUTH West(as PER original position).

Answer:

heya!

frequency=the no. of SOUND waves produced in 1 SECOND. time PERIOD=time period is taken to produce one wave of sound. AMPLITUDE =maximum displacement ALONG the mean position of particles of medium

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