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प्रश्न
State the energy changes which take place when:
A car moves up a hill.
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उत्तर
The kinetic energy of moving car changes to potential energy.
संबंधित प्रश्न
State the energy change in the following device while in use:
A glowing electric bulb.
Which of the following produces more heat (per unit mass) on burning?
Name the physical quantity measured in terms of horse power.
State the energy changes in the following case while in use:
a ceiling fan
Select the renewable and non-renewable sources of energy from the following:
Oil
Give three examples of bodies possessing potential energy.
State the energy changes which take place when:
A magnesium ribbon burns in air.
Give one example when:
Chemical energy to electrical energy.
Obtain an expression for the kinetic energy of a body of mass m moving with a velocity v?
A body of mass m is taken from a height h to 2h. What is the increase in its potential energy?
