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प्रश्न
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
A body of mass m falls down through a height h. Obtain an expression for the work done by the force of gravity.
A body of mass m is moving with a velocity v. Write the expression for its kinetic energy.
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 ?
How is kinetic energy possessed by a moving body measured?
Write the type of energy possessed in the following case:
A falling apple
What is the main energy transformation that occur in:
Photosynthesis in green leaves.
Give one example when:
Chemical energy changes to light energy.
Calculate the change in the Kinetic energy of a moving body if its velocity is reduced to 1/3rd of the initial velocity.
For the same kinetic energy of a body, what should be the change in its velocity if its mass is increased nine times?
You do not have rangoli powder. What things can you use as an alternative?
