Home /
Expert Answers /
Physics /
3-34-an-automobile-39-s-motor-produces-32kw-of-useful-power-while-it-travels-40km-at-a-constant-spe-pa318
(Solved): 3. "An automobile's motor produces 32kW of useful power while it travels 40km at a constant spe ...
3. "An automobile's motor produces 32kW of useful power while it travels 40km at a constant speed of 80km/h. During the journey it uses 4kg of diesel fuel. Find the efficiency of the motor. (qfuel =42MJ/kg)