An objects mechanical energy never changes it simply changes between

Physics

1 answer:

tatiyna3 years ago

4 0

Actually moving and not. It is the sum of potential and kinetic energy.

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4 years ago

A 9 kg box is placed on a 6 m tall shelf. What will be the kinetic energy of the box right before it hits the ground? (use g = 1

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Answer:

540 J

Explanation:

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4 years ago

How much heat is required to raise the temperature of 0.25 kg of water from 20°C to 30°C

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Answer:

10500 J/kg/*C

Explanation:

Quantity of heat required=mass of substance x specific heat capacity x change in temperature

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3 years ago

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

GarryVolchara [31]

Explanation:

It is given that,

Mass of the block, m = 3 kg

Initially, the block is at rest, u = 0

Force acting on the block, P = 12 N

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'

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