Checking understanding of energy stores, transfers and power

5 questions

Assessing knowledge of different energy stores, how energy is transferred and the concept of power.

Questions

1. Which of the following is an example of a chemical energy store?
2. Power is the rate at which energy is transferred.
3. A 10 kg object is lifted 5 m vertically. What is the increase in its gravitational potential energy? (Take g = 9.8 m s⁻²)
4. Which of the following does NOT transfer energy from one object to another?
5. A 60 W light bulb is switched on for 3 hours. How much energy does it use?