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प्रश्न
Give one example when:
Electric energy changes to mechanical energy.
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उत्तर
In an electric motor, electric energy changes to mechanical energy.
संबंधित प्रश्न
Fill in the blank
Energy possessed by a compressed spring is ______ energy.
State the energy transformation on the following:
Electricity is obtained from wind energy.
Name two examples in which the mechanical energy of a system remains constant.
Show that the quantity 2K/v2 has the unit of mass, where K is the kinetic energy of the body.
A metal ball of mass 2kg is allowed to fall freely from rest from a height of 5m above the ground.
What the kinetic energy of the ball just before it hits the ground ?
What kind of energy is possessed in a situation when?
A shooting arrow.
Name a device in which solar energy is converted into electricity state its two uses.
State the energy changes which take place when:
In a heat engine.
A body of mass 50 kg has a momentum of 3000 kg−1 ms. Calculate:
(j) the kinetic energy of the body.
(ii) the velocity of the body.
Obtain an expression for the kinetic energy of a body of mass m moving with a velocity v?
