A particular car engine operates between temperatures of 525C (inside the cylinders of the engine) and 20C (the temperature of the surroundings). (a) Given these two temperatures, what is the maximum possible efficiency the car can have? % (b) With this maximum efficiency, determine how much heat must be obtained by burning fuel in the car's engine to accelerate a 1500 kg car from rest to a speed of 100 km/h (neglect resistive forces). J