Advertisements
Advertisements
प्रश्न
Advertisements
उत्तर
APPEARS IN
संबंधित प्रश्न
Name the process used for producing electricity using nuclear energy.
A boy of mass m climbs up a staircase of vertical height h.
(a) What is the work done by the boy against the force of gravity?
(b) What would have been the work done if he uses a lift in climbing the same vertical height?
Name three non-renewable sources of energy.
Name two examples in which the mechanical energy of a system remains constant.
What do you understand by mechanical energy?
Is it possible that a body may possess energy even when it is not in motion?
What kind of energy is possessed in a situation when?
A fish moving in the water.
Show that in case of a body falling freely under gravity, total mechanical energy remains conserved (neglect air resistance).
A girl of mass 35 kg climbs up from the first floor of a building at a height 4 m above the ground to the third floor at a height 12 m above the ground. What will be the increase in her gravitational potential energy? [g = 10 ms-2]
Unit of calorific value of a substance is ____________.
