Advertisements
Advertisements
प्रश्न
Name the energy changes for the following:
bicycle brakes
Advertisements
उत्तर
Mechanical energy into heat energy.
APPEARS IN
संबंधित प्रश्न
Which of the following produces more heat (per unit mass) on burning?
Name five different forms of energy.
Name six different forms of energy?
Name three non-renewable sources of energy.
How is the solar energy used to generate electricity in a solar power plant?
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 the two groups in which various sources of energy are classified?
A body of mass 0.2 kg falls from a height of 10 m to a height of 6 m above the ground. Find the loss in potential energy taking place in the body. [g = 10ms−2]
A body of mass 50 kg has a momentum of 3000 kg−1 ms. Calculate:
(j) the kinetic energy of the body.
(ii) the velocity of the body.
Match the pairs.
| Group 'A' | Group 'B' | ||
| (1) | Rolling object | (a) | Heat energy |
| (2) | Food | (b) | Atomic energy |
| (3) | Stretched bow | (c) | Kinetic energy |
| (4) | Sunlight | (d) | Potential energy |
| (5) | Uranium |
(e)
|
Chemical energy
|
