Advertisements
Advertisements
प्रश्न
Name the device which converts electrical energy into mechanical energy.
Advertisements
उत्तर
An electric motor is a device that converts electrical energy into mechanical energy.
APPEARS IN
संबंधित प्रश्न
A ball is placed on a compressed spring. What form of energy does the spring possess? On releasing the spring, the ball flies away. Give a reason.
State whether the object possess kinetic energy, potential energy, or both :
A bird running on the ground ____________.
What kind of energy is possessed by the following?
Water stored in the reservoir of a dam __________.
What type of energy is possessed : by the piece of stone which is thrown away on releasing the stretched rubber strings of catapult?
What is the difference between potential energy and kinetic energy?
An iron sphere of mass 10 kg has the same diameter as an aluminium sphere of mass 3.5 kg. Both the spheres are dropped simultaneously from a tower. When they are 10 m above the ground, they have the same :
The hanging bob of a simple pendulum is displaced to one extreme position B and then released. It swings towards centre position A and then to the other extreme position C. In which position does the bob have :
(i) maximum potential energy?
(ii) maximum kinetic energy?
The device which converts mechanical energy into energy which runs our microwave oven is :
A microphone converts :
A girl with having a mass of 35 kg sits on a trolley of mass 5 kg. The trolley is given an initial velocity of 4 m s–1 by applying a force. The trolley comes to rest after traversing a distance of 16 m. (a) How much work is done on the trolley? (b) How much work is done by the girl?
