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प्रश्न
State the energy changes which take place when:
A body released from rest from the top of a building.
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उत्तर
The potential energy changes to kinetic energy.
संबंधित प्रश्न
Calculate the change in the Kinetic energy of a moving body if its velocity is reduced to 1/3rd of the initial velocity.
Name the type of energy (kinetic or potential) possessed by the following:
A stretched rubber band.
A ball is made to fall freely from a height. State the kind/ kinds of energy possessed by the ball when it is at the highest point .
Name the type of energy (kinetic energy K or potential energy U) possessed in the given cases:
A moving cricket ball
Select the renewable and non-renewable sources of energy from the following:
Diesel
Name three non-renewable sources of energy.
The following are some of the energy transformations.
A. Electrical to light
B. Work to heat
C. Chemical to light
D. Electrical to sound
E. Mechanical to electrical
Identify the energy transformation that takes place in the following by inserting the corresponding letter in the shape provided.
(i) A candle flame
(ii) A torch is lighted
(iii) A microphone is used in a meeting
(iv) A cycle dynamo
(v) A piece of metal is being filed
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 transformation on the following:
Electricity obtained from hydro energy.
