Tom uses his owner’s motorcycle to chase Jerry (with an ax). The motorcy- cle has a 95 hp engine, that is, the rate it does work at is 95 hp. It has an efficiency of 23%. a) How much energy (in the form of heat from burning gasoline) enters the engine every second? b) Assume that engine has half the efficiency of a Carnot engine running between the same high and low temperatures. If the low temperature is 360 K, what is the high tem- perature? c) Assume the temperature of the inside of the engine is 360 K. One part of the engine is a steel rectangle, 0.0400 m by 0.0500 m and 0.0200 m thick. Heat flows from that temper- ature through the thickness of the steel to a temperature of 295 K. What is the rate of heat flow?
Tom uses his owner’s motorcycle to chase Jerry (with an ax). The motorcy-
cle has a 95 hp engine, that is, the rate it does work at is 95 hp. It has an efficiency of
23%.
a) How much energy (in the form of heat from burning gasoline) enters the engine every
second?
b) Assume that engine has half the efficiency of a Carnot engine running between the
same high and low temperatures. If the low temperature is 360 K, what is the high tem-
perature?
c) Assume the temperature of the inside of the engine is 360 K. One part of the engine is
a steel rectangle, 0.0400 m by 0.0500 m and 0.0200 m thick. Heat flows from that temper-
ature through the thickness of the steel to a temperature of 295 K. What is the rate of
heat flow?
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