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Anestetic [448]
3 years ago
8

Who performed the coin and feather experiment?​

Physics
2 answers:
Pavlova-9 [17]3 years ago
8 0

Answer:

Robert Boyle

Explanation:

Robert Boyle performed the experiment of Galileo

Please give me brainliest please

Leokris [45]3 years ago
4 0

Answer: Robert Boyle

Explanation:

Galileo's experiment and coin and feather experiment performed by Robert Boyle.

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A 3.0-kg block is on a horizontal surface. The block is at rest when, at t = 0, a force (magnitude P = 12 N) acting parallel to
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Explanation:

It is given that,

Mass of the block, m = 3 kg

Initially, the block is at rest, u = 0

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The coefficient of kinetic friction between the block and the surface is, \mu_k=0.2

We need to find the rate is the force P doing work on the block at t = 2.0 s. The rate at which work is done is called the power. Let is equal to P'

Frictional force acting on the block, f=\mu_k mg

f=0.2\times 3\ kg\times 9.8\ m/s^2=5.88\ N

So, the net force acting on the block, F = P - f

F=12-5.88=6.12\ N

Let a is the acceleration of the block, a=\dfrac{F}{m}

a=\dfrac{6.12}{3}=2.04\ m/s^2

Let v is the velocity of the block after 2 seconds. So,

v=u+at

v=0+2.04\times 2

v = 4.08 m/s

Power, P'=\dfrac{W}{t}=\dfrac{F.d}{t}=F.v

P'=12\ N\times 4.08\ m/s=48.96\ Watts

So, the force P is doing work on the block at the rate of 48.96 watts.

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