Use the terms in the table to help answer parts (a) to (c). A term may be used once, more than once or not at all.
| Type | Terms |
|---|---|
| energy stores | chemical, elastic, gravitational, kinetic, thermal |
| transfer pathways | electrically, mechanically, by heating, by radiation |
A gymnast lands on a trampoline and bends the trampoline mat downwards. For a moment, the gymnast and the mat are stationary.
Give the type of energy store in the deformed trampoline mat.
A canoe is moving across a lake.
Give the energy store of the canoe due to its movement.
A person turns the handle of a hand-cranked torch.
Give the pathway by which energy is transferred from the person to the torch.
During one period of use, 20 J of energy is transferred to the torch. The torch transfers 6 J to the surroundings by radiation. All the remaining energy is transferred to thermal stores of the torch and the surroundings.
Calculate the energy transferred to the thermal stores.