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प्रश्न
Give one relevant example for the following transformation of energy :
Chemical energy to light energy.
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उत्तर
Fire crackers burst
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संबंधित प्रश्न
Select the correct alternatives
The energy stored in an electric cell is
Name the type of energy (kinetic energy K or potential energy U) possessed in the given case:
An arrow shot out of a bow.
A body of mass m is moving with a velocity v. Write the expression for its kinetic energy.
Select the renewable and non-renewable sources of energy from the following:
Coal
Name the energy changes for the following
human body
A ball of mass 0.5 kg slows down from a speed of 5m/s-1 to that of 3m/s-1. Calculate the change in kinetic energy of the ball.
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 ?
Obtain an expression for the potential energy of a body of mass m at a height h above the ground.
Give one example when:
Electric energy changes to mechanical energy.
What is nuclear energy? Explain the principle of producing electricity using nuclear energy is a nuclear reactor.
