Suppose a Carnot engine has an efficiency of 45 % and a cold reservoir temperature of 28.5°C. Part (a) What is the hot reservoir temperature, in degrees Celsius, of this Carnot engine? Part (b) What must the hot reservoir temperature be, in degrees Celsius, for a real heat engine that has an efficiency of 45, which is 70% of the maximum efficiency? Assume it has the same cold reservoir, at 28.5°C.

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