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प्रश्न
Give one example when:
Kinetic energy changes to heat energy.
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उत्तर
When two stones are rubbed against each other, kinetic energy changes to heat energy.
संबंधित प्रश्न
State two disadvantages of geothermal energy.
Give one example of a body that has potential energy, due to its position at a height.
Explain the principle of generating electricity from hydro 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
What is the main energy transformation that occur in:
Photosynthesis in green leaves.
State the energy changes which take place when:
Electricity obtained from nuclear 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 m falls from a height h1 to a height h2, above the ground (h1 > h2). What is the loss of potential energy?
Find out the types of energy from the following puzzle.
When and why do clothes smell of naphthalene?
