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1.6 Energy Dissipation (Year 10 Physics)

The following test is covering '1.6 Energy Dissipation' for Year 10 Physics.
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Why might friction be deliberately increased in certain devices?
If wasted energy is dissipated into thermal energy, what happens to the surroundings?
Through what process does friction waste energy?
How does friction affect the energy transfer of a bicycle brake system?
What happens to energy that is not usefully transferred?
As dissipated energy spreads out, what happens to its usefulness?
How can energy dissipation be minimized?