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प्रश्न
Give one example when:
Mechanical energy changes to electric energy.
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उत्तर
In an electric generator, the mechanical energy changes to electric energy.
संबंधित प्रश्न
Name the type of energy (kinetic energy K or potential energy U) possessed in the given cases:
A moving cricket ball
Write an expression for the potential energy of a body of mass m placed at a height h above the earth's surface. State the assumptions made, if any.
Name six different forms of energy?
Name the two groups in which various sources of energy are classified. State on what basis are they classified.
A ball of mass 0.5 kg slows down from a speed of 5m/s-1 to that of 3m/s-1. Calculate the change in kinetic energy of the ball.
State the energy changes which take place when:
A body thrown vertically upwards from the ground.
A boy sits and stands repeatedly. Draw a graph showing the variation of potential energy with time.
Can you tell?
What are the various forms of energy?
What is the difference between the solid, liquid, and gaseous states of a substance?
A good fuel should possess:
