Problem 1- 5 marks An engine has an efficiency of 15%; that is, it converts into useful work 15% of the heat generated by burning a fuel. 1. If the engine consumes 0.90L/h of a gasoline with a heating value of 4.0104kJ/L, how much power does it provide? Express the answer both in kW and horsepower. 2. Suppose the fuel is changed to include 8% ethanol by volume. The heating value of ethanol is approximately 3.25104kJ/L and volumes of gasoline and ethanol may be assumed additive. At what rate (L/h) does the fuel mixture have to be consumed to produce the same power as gasoline