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प्रश्न
Give one example when:
Potential energy changes to electric energy.
उत्तर
The potential energy of stored water in dams, changes to electric energy in generators.
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संबंधित प्रश्न
A body of mass m is moving with a velocity v. Write the expression for its kinetic energy.
Differentiate between the potential energy (U) and the kinetic energy (K).
State two advantages of producing electricity from solar energy.
MULTIPLE CHOICE TYPE:
The ultimate source of energy is:
(a) wood
(b) wind
(c) water
(d) sun
State the energy changes which take place when:
Photographic film is exposed to sunlight.
Give one example when:
Mechanical 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]
Use your brain power!
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