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प्रश्न
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.
पर्याय
Kinetic energy
Potential energy
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उत्तर
Potential energy
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संबंधित प्रश्न
Give one relevant example for the following transformation of energy:
Electrical energy to heat energy.
What is solar 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
Show that the quantity 2K/v2 has the unit of mass, where K is the kinetic energy of the body.
State the energy changes which take place in Electricity is obtained from solar energy.
State the energy changes which take place when:
A battery lighting up a bulb.
Give one example when:
Sound energy changes to electric energy.
Give one example when:
Electrical energy to heat energy.
Draw a diagram to show the energy changes in an oscillating simple pendulum. Indicate in your diagram how the total mechanical energy in it remains constant during the oscillation.
A body of mass 0.2 kg falls from a height of 10 m to a height of 6 m above the ground. Find the loss in potential energy taking place in the body. [g = 10ms−2]
