1.6 Energy Dissipation (GCSE Physics)

The following is a GCSE Physics test covering '1.6 Energy Dissipation'

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How does energy dissipation affect the efficiency of systems?

Useful energy is energy transferred:

What factor contributes most to energy dissipation occurring in gear systems?

If wasted energy is dissipated into thermal energy, what happens to the surroundings?

In energy dissipation, why doesn`t wasted energy disappear?

Through what process does friction waste energy?

In a kettle, which energy dissipation might occur?

Why might friction be deliberately increased in certain devices?

Why do brakes on cycles become hot during long braking?

What happens when energy dissipates in a car engine?

How does friction affect the energy transfer of a bicycle brake system?

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