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प्रश्न
Give one example when:
Chemical energy changes to light energy.
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उत्तर
During the burning of magnesium, chemical energy changes to light energy.
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संबंधित प्रश्न
State the energy change in the following device while in use:
A loudspeaker
Name the type of energy (kinetic energy K or potential energy U) possessed in the given case:
A stretched wire
What is wind energy?
Name the energy changes for the following:
bicycle brakes
Name the energy changes for the following
human body
Write the type of energy possessed in the following case:
A moving cricket ball.
State the energy changes which take place when:
A stone projected vertically upwards, returns back to the thrower.
Calculate the kinetic energy of a body of mass 0.1 kg. and momentum 40kg m/s.
In a hydroelectric power station, 1000 kg of water is allowed to drop through a height of 100 m in 1 sec. If the conversion of potential energy to electric energy is 60%. Calculate the power output. [Take: g = 10m/sec2]
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