One gallon of gasoline equals 125,000 Btu; 1 Btu equals 778 foot-pounds of work. One gallon of gasoline is used in pulling a load 10 miles. The force needed to pull the load is 700 pounds. What thermal efficiency does this represent? Express the answer to the nearest tenth percent.
A) 37.3%
B) 38.0%
C) 38.7%
D) 39.1%
Correct Answer:
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