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प्रश्न
State the energy changes which take place when:
An air gun is loaded and then fired.
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उत्तर
During loading, the mechanical energy changes to the potential energy of spring. On firing, the potential energy of spring changes to the kinetic energy of the bullet.
संबंधित प्रश्न
Define calorific value of a fuel.
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Fill in the blank
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Name the type of energy (kinetic or potential) possessed by the following:
Water flowing in a river.
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.
Name two examples in which the mechanical energy of a system remains constant.
State the energy changes which take place when:
A magnesium ribbon burns in air.
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