Physics Practice: Energy (Mock Test 3 - Advanced)
1. When a ball is thrown vertically upwards, what is the energy transformation taking place during its ascent?
2. Why does a person feel more exhausted when running up a flight of stairs compared to walking the same distance horizontally?
3. A body of mass $m$ is moving with velocity $v$. If its mass is doubled and velocity is halved, the new kinetic energy will be:
4. Which mechanism describes the energy change in a Hydroelectric Power Plant?
5. Why is the efficiency of a machine never 100%?
6. A machine with power $2\ \text{kW}$ works for $30\ \text{minutes}$. The total energy consumed is:
7. At the mean position of a simple pendulum, the energy possessed by the bob is:
8. Which of the following describes the anatomical energy transfer in an oscillating spring?
9. When an arrow is released from a bow, the ________ energy of the bow changes to ________ energy of the arrow.
10. Two boys A and B lift a $20\ \text{kg}$ load to a height of $5\ \text{m}$. A takes $10\ \text{s}$ and B takes $20\ \text{s}$. Which is true?
11. Tidal energy is harnessed due to the gravitational pull of the ________.
12. What is the energy transformation in a Loudspeaker?
13. Nuclear Fusion is the source of energy in:
14. 1 Watt-hour is equal to:
15. Why is a person running on a circular track doing zero work from a purely physics perspective (in terms of displacement)?
16. Non-conventional sources of energy are those which are:
17. In a Steam Engine, the energy conversion sequence is:
18. The power used by a machine that does $500\ \text{J}$ of work in $2\ \text{seconds}$ is:
19. Ocean Thermal Energy (OTE) is based on the temperature difference between:
20. Which of the following is NOT a form of mechanical energy?
