Conservation of Mechanical Energy

Q.

Write the observed energy transformation that takes place at thermal power station.

Q.

__________ batteries are designed to be recharged and used a number of times.

Q. A particle of mass 1 kg was sliding with a velocity of $10m{s}^{-1}$ on a rough floor. It comes to rest after 5 s. The rate at which floor warms up is ___ W.

1. 5
2. 10
3. 12
4. 8

Q.

A man intakes glucose and then moves a block. The block comes to rest after sliding on a rough floor. The correct order of energy transformation is:

1. Heat - Kinetic - Chemical

2. Data insufficient

3. Chemical - Heat - Kinetic

4. Chemical - Kinetic - Heat