Problems: 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 work2. 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.