Advertisements
Advertisements
प्रश्न
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
Name the type of energy (kinetic energy K or potential energy U) possessed in the given cases:
A moving bus
State the energy changes in the following case while in use:
an electric toaster.
Why using wood as fuel is not advisable although wood is a renewable source of energy?
State two disadvantages of using nuclear energy for producing electricity.
MULTIPLE CHOICE TYPE:
The ultimate source of energy is:
(a) wood
(b) wind
(c) water
(d) sun
What kind of energy is possessed in a situation when?
Water stored in dams.
Give three examples of bodies possessing potential energy.
State the energy changes which take place when:
Burning of coal.
For the same kinetic energy of a body, what should be the change in its velocity if its mass is increased nine times?
Unit of calorific value of a substance is ____________.
