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ANSWER:

hi

Explanation:

CONSIDER the charges Q,q,-q lies at the VERTICES of an eqilateral TRIANGLE .what is the force on its charge

ATOMS don't age. Atoms radioactively decay when a lower-energy nuclear CONFIGURATION exists to which they can transition. The ACTUAL decay event of an individual atom happens randomly and is not the result of the atom getting OLD or CHANGING through time.

Explanation:

1. 4 + 4 (series) = 8

2. 8 x 1 / 9 ( parallel) = 8/9

3. 8 + 2 (series) = 10

4. (10 x 8/9 ) / (10 + 8/9) parallel = 80 / 98 OHM

ANSWER:

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Explanation:

I can't UNDERSTAND

Answer:

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Explanation:

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Given:-

→ Height of the object = 5 cm

→ Height of the image = 1.25 cm

→ Distance of the object = 24 cm

To find:-

→ Position of image.

→ Focal LENGTH of the convex MIRROR.

Solution:-

We know that :-

m = -(v/u) = hᵢ/hₒ

⇒ -(v/u) = hᵢ/hₒ

⇒ -v/(-24) = 1.25/5

⇒ -24(1.25) = 5(-v)

⇒ -30 = -5v

⇒ v = -30/-5

⇒ v = 6 cm

Hence, the image is formed at a distance of 6 cm from the mirror. The positive sign of v shows that the image is formed on the right i.e. behind the mirror.

________________________________

Since the mirror is convex, we have :-

• u = -24 cm

Now, according to mirror formula :-

1/v + 1/u = 1/f

⇒ 1/6 + 1/(-24) = 1/f

⇒ 1/6 - 1/24 = 1/f

⇒ [4 - 1]/24 = 1/f

⇒ 3/24 = 1/f

⇒ 3f = 24

⇒ f = 24/3

⇒ f = 8 cm

Thus, focal length of the mirror is 8 cm .

Answer:

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Explanation:

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ANSWER:

is this a QUESTION or a JOKE???

GIVEN:-

To Find:-

Pressure experienced on the larger piston.

Explanation:-

ACCORDING to Pascal's law, pressure at every point in a STATIC fluid is same.

Therefore, pressure experienced on the larger piston=pressure on the smaller piston=

ANSWER:

where is the table FIRST of all

ANSWER:

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ANSWER:

A their FREQUENCY STAYS

ANSWER:

I = Q/t

It = q

10 × 5 = q

50Coulomb = q

ANSWER:

radio waves

EXPLANATION:

on the shorter WAVELENGTH side of raido waves SPECTRUM

Answer:

the AREA of CROSS section of small pipe is 1 metre SQUARE and that of the LARGE one is 2 metre square. calculate the pressure experienced on the large piston if a force of 10 N is applied on the small piston....

Answer:

They are GIVEN velocities 3 m/s and

6 m/s respectively. The LENGTH of plank is 1m and BLOCK is of negligible size. After some time when the

block has reached the other end of plank it stops slipping on plank. Find the coefficient of friction

Answer:

Thus the ball takes 2 SECOND to FALL through a HEIGHT of 20 METRES .

ANSWER:

FOCUS, Focal length and focal plane of spherical mirrors - DEFINITION. The plane through the focus perpendicular to the AXIS of a mirror or lens is CALLED focal plane.

EXPLANATION:

TRUE is ANSWER ...

.

.

HOPE it HELPS

In order to answer this question, we have to remember that: When a current-carrying conductor is perpendicular to the magnetic field, the force acting on it is DIRECTLY proportional to (a) magnitude of current flowing in the conductor (b) strength of magnetic field applied, and (c) LENGTH of the conductor. And greater the force, greater will be the displacement of the conductor (which is an aluminium rod in this case). Now :

(i) if the current in rod AB is INCREASED, then more force will act on the rod and hence the displacement of rod will ALSO be more.

(ii) if a stronger horseshoe magnet is used, then the strength of magnetic field will increase leading to greater force on the rod. And DUE to greater force, the displacement of rod will also be more.

(iii) If the length of rod AB is increased, then more force will act on the rod and hence the displacement of rod will also be more.

Answer:

The MAGNITUDE of the field from a semi-infinite WIRE is HALF of that of an infinite wire ( look at direct integration of the Biot-Savart law): in z direction. From the circular wire, the field is: The magnetic field from each section contributes in the same direction (z).

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Answer:

This outermost SHELL is known as the VALENCE shell, and the electrons FOUND in it are CALLED valence electrons.

Answer:

DHAKA University and Dhaka years and Asia CUP Super Abu DHABI HRS Pakistan will v

Answer:

holonomic constraints are relations between the position variables (and possibly time[1]) that can be expressed in the following FORM:

{\displaystyle f(u_{1},u_{2},u_{3},\ldots ,u_{n},t)=0}{\displaystyle f(u_{1},u_{2},u_{3},\ldots ,u_{n},t)=0}

where {\displaystyle \{u_{1},u_{2},u_{3},\ldots ,u_{n}\}}{\displaystyle \{u_{1},u_{2},u_{3},\ldots ,u_{n}\}} are the n generalized coordinates that describe the system. For example, the motion of a particle constrained to lie on the surface of a sphere is subject to a holonomic constraint, but if the particle is able to fall off the sphere under the influence of gravity, the constraint becomes non-holonomic. For the first case the holonomic constraint may be given by the equation:

{\displaystyle r^{2}-a^{2}=0}{\displaystyle r^{2}-a^{2}=0}

where {\displaystyle r}r is the distance from the centre of a sphere of RADIUS {\displaystyle a}a, whereas the second non-holonomic case may be given by:

{\displaystyle r^{2}-a^{2}\geq 0}{\displaystyle r^{2}-a^{2}\geq 0}

Velocity-dependent constraints such as:

{\displaystyle f(u_{1},u_{2},\ldots ,u_{n},{\dot {u}}_{1},{\dot {u}}_{2},\ldots ,{\dot {u}}_{n},t)=0}{\displaystyle f(u_{1},u_{2},\ldots ,u_{n},{\dot {u}}_{1},{\dot {u}}_{2},\ldots ,{\dot {u}}_{n},t)=0}

are not usually holonomic seIn this article learn about Constraints in physics USED in classical mechanics. Constraints limit the motion of the system. We can use constraints to find the degrees of freedom that that must be calculated before solving dynamical problems.

Constraints

A constrained motion is a motion which cannot proceed arbitrarily in any manner.

Particle motion can be restricted to OCCUR (1) along with some specified path (2) on the surface (plane or curved) arbitrarily oriented in space.

Imposing constraints on a mechanical system is done to simplify the mathematical description of the system.

Constraints expressed in the form of equation

f

(

x

1

,

y

1

,

z

1

,

…

…

,

x

n

,

y

n

,

z

n

:

t

)

=

0

are called holonomic constraints.

Constraints not expressed in this fashion are called non-holonomic constraints.

Scleronomic constraints are independent of time.

Constraints CONTAINING time explicitly are called rehonomic.

Therefore a constraint is either

Scleronomic where constraints relations does not depend on time or rheonomic where constraints relations depends explicitly on time

or

Holonomic where constraints relations can be made independent of velocity or non-holonomic where these relations are irreducible functions of velocity

Constraints types of some physical systems are given below in the table

1.WE SHOULD NOT CUT TREES

2.WE SHOULD NOT POLLUTE OUR ENVIRONMENT

3.WE SHOULD NOT THROW ANY GARRAGE IN RIVER,OCEAN,SEA....

4.WE SHOULD NOT THROW GARRAGE ON ROADS....

5.WE SHOULD NOT USE PLASTIC

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Explanation:

TOTAL INCOME of Shruti, Shreya and Sampada is Rs.8,07,000. The

percentage of their EXPENSES are 75%, 80% and 90%. If the

ratio of their savings is 16:17:12, then find the annual saving of

each of them.

ANSWER:

D

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ANSWER:

The MAGNITUDE of the ELECTRIC field is simply defined as the force per charge on the TEST charge. ... SINCE electric field is defined as a force per charge, its units would be force units divided by charge units.

ANSWER:

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Answer:

70 kg

Explanation:

Q =M X S X ∆T

3500= M X 1 X50

M=70KG

Explanation:

No.convex LENS not always formed a real & INVERTED image,it forms virtual and erect image when the OBJECT is the placed between the f2 and optical centre

Answer:

Q1. I = 0.8 A

Q2. I = 140Ω

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ANSWER:

HOPE it will HELP you...

Answer:

A varacter diode is basically a reverse biased PN JUNCTION which UTILISES the inherent capacitence of the DEPLETION layer. It is also KNOWN as varicap

Explanation:

so option A is the correct answer

Answer:

light EXISTS as a particle and wave, and when a SHARD shadow is cast, it means that the object is of a SIGNIFICANT size to deflect the rays of light PARTICLES. But, when the object is of insignificant size, we can see the wavelength properties of light, and it bends around the object, THUS not creating a shadow.

Explanation:

hope this helped :)

ANSWER:

RED is ALSO LOOKING GOOD

Answer:

The resistance of a conductor DEPENDS on the cross sectional AREA of the conductor, the LENGTH of the conductor, and its resistivity. It is important to note that electrical conductivity and resistivity are INVERSELY proportional, meaning that the more conductive SOMETHING is the less resistive it is.

Explanation:

You see that parllel Resistance R3 and R4

Use the formula 1/Rf =1/R3 + 1/R4

You will get Rf

now you have all series resistance R1 R2 and Rf

now add all You will get One final resistance

and thus You have one resistance and one volt

Then

You have the Relation formula of those V=IR

so to solve these type of PROBLEM simplify the QUESTION

like in this CASE i MADE all resistance into one

but REMEMBER add series and parallel resistance using their formula

Answer:

(i) 864,000 J

(ii) 1,440,000 J

Explanation:

As E.B. calculates the energy consumed PER household, we must CALCULATE the energy.

6 hours = 6 × 60 × 60 SECS = 21600

8 hours = 8 × 60 × 60 secs = 28800

E1 = 864,000 J

E2 = 1,440,000 J

Hope I was correct

ANSWER:

hi

Explanation:

ANSWER:

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ANSWER:

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Answer:

90°

'cause B is a REFLECTION of A

ANSWER:

what is the reaction CALLED when oxidation and reaction take PLACE simultaneously ?

EXPLANATION:

HOPE THE ANSWER IS CORRECT

30−T=3a

T−20=2a

T=24

Hence FORCE =24−20

Force =4 N

ANSWER:

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Explanation:

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Answer:

It is desired to FORM a real image 2cm high at 60cm from the MIRROR. What type of ... Focal lenght of CONVEX mirror = ? CM. Object distance u = ? cm. Image distance v = 60 cm.

Given that,

• Velocity of the ball = 10 m/s (U)
• Final velocity = 0 (zero) (v)
• Time taken for the ball to reach it's maximum height = ?
• Value of g = 10 m/s^2

By applying first equation of motion,

• v = u - gt
• 0 = 10 m/s - 10 m/s^2 × t
• 10 m/s^2 × t = 10 m/s
• t = 10 m/s / 10 m/s^2
• t = 1 sec.

Therefore, the time TAKE for the ball to reach it's maximum height is 1 second.

Hope this HELPS you

Thank you for your QUESTION it had helped me to think.

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Explanation:

rubber

Elasticity is the ability of a material to regain its own original shape after being STRETCHED ACCORDING to which, rubber is the most ELASTIC SUBSTANCE.