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प्रश्न
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उत्तर
When the head of a nail is struck with a hammer, the mechanical energy of the hammer pushes the nail into the plank of wood and in this process a part of energy is converted into heat energy.
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संबंधित प्रश्न
Define calorific value of a fuel.
Give one relevant example for the following transformations of energy:
Chemical energy to heat energy.
State different forms of potential energy and give one example of each.
Select the renewable and non-renewable sources of energy from the following:
Wood
What is wind energy?
What happens to the K.E. when
(i) the mass of the body is doubled at a constant velocity and
(ii) the velocity of the body is doubled at constant mass?
Name a device in which solar energy is converted into electricity state its two uses.
Show that in case of a body falling freely under gravity, total mechanical energy remains conserved (neglect air resistance).
Obtain an expression for the kinetic energy of a body of mass m moving with a velocity v?
What is meant by energy?
