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प्रश्न
Name the type of energy (kinetic energy K or potential energy U) possessed in the given case:
An arrow shot out of a bow.
विकल्प
Kinetic energy
Potential energy
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उत्तर
Kinetic energy
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संबंधित प्रश्न
Write true or false of the following statement.
There is always some loss of energy in conversion from one form of energy to another form, so the total energy is not conserved.
Give one example of a body that has potential energy, due to its position at a height.
Give one example of a body that has potential energy, in due to its state.
Name the form of energy which a body may possess even when it is not in motion. Give an example to support your answer.
Explain the principle of producing electricity using the nuclear 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
Calculate the decrease in the kinetic energy of a moving body if its velocity reduces to half of the initial velocity.
State the energy changes which take place when:
A magnesium ribbon burns in air.
Give one example when:
Electric energy changes to potential energy.
A moving body weighing 400 N possesses 500 J of kinetic energy. Calculate the velocity with which the body is moving. (g = 10 ms2)
