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Biblioteka

Year 9 Homework - 3rd February

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Pitanje 1
1.

Thermal energy is stored in

Pitanje 2
2.

Kinetic energy is stored in

Pitanje 3
3.

Gravitational potential energy is stored in

Pitanje 4
4.

Which of the following is a chemical energy store?

Pitanje 5
5.

Which of the following is a nuclear energy store?

Pitanje 6
6.

Which of the following is a store of elastic potneital energy?

Pitanje 7
7.

Which of the following is a mechanical energy transfer?

Pitanje 8
8.

In which of the following is the energy transfer done by radiation?

Pitanje 9
9.

Describe the energy transfer that occurs when a ball is dropped from a height.

Pitanje 10
10.

Describe the energy transfer that occurs when a car applies it's breaks and the breaks then warm up.

Pitanje 11
11.

Describe the energy transfer that occurs when a car applies it's breaks and the breaks then warm up.

Pitanje 12
12.

Describe the energy transfer that occurs when a mobile phone is charged.

Pitanje 13
13.

A ball has 400J of gravitaional potential energy. If no energy is dissipated how much energy is usefully transferred to kinetic energy?

Pitanje 14
14.

An electric car has 30J of chemical energy. 12J of energy is dissipated as sound, how much energy is usefully transferred to kinetic energy?

Pitanje 15
15.

A kettle has 200J of thermal energy. 25J of energy is dissipated as sound, how much energy is usefully transferred to thermal energy?