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Solutions: Energy flow

1. The diagram below show the Sankey diagram for an engineIf 106 J of energy are put into the engine how much energy is converted toa. Heat due to frictionb. Heat lossc. Useful workHint:Solution: 2. A car is said to lose about 70% of its energy to heat which is transferred to the cooling system.In the cooling system water is passed around the engine at a rate of about 150 litres per minute.

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