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संबंधित प्रश्न
Give one example of a body that has potential energy, in due to its state.
Name the type of energy (kinetic energy K or potential energy U) possessed in the following case:
A piece of stone placed on the roof.
Write an expression for the potential energy of a body of mass m placed at a height h above the earth's surface. State the assumptions made, if any.
Name the form of energy which a body may possess even when it is not in motion. Give an example to support your answer.
Select the renewable and non-renewable sources of energy from the following:
Diesel
State the energy transformation on the following:
Electricity is obtained from hydro energy.
A body of mass 5 kg falls from a height of 10 m to 4 m. Calculate:
The total energy possessed by the body at any instant? (Take g = 10 ms-2).
A metal ball of mass 2kg is allowed to fall freely from rest from a height of 5m above the ground.
What the kinetic energy of the ball just before it hits the ground ?
State the energy changes which take place when:
A magnesium ribbon burns in air.
What ts the original source of energy for the electricity produced at a thermal power station?
