The shortest distance between two points on a curved surface is a
A) straight line.
B) geodesic.
C) neither of these
Answer: B
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A heat pump is used to heat a house in Minnesota in the winter and has half the ideal coefficient of performance for a reversible heat pump. If the outside air temperature is 
and the indoor temperature desired is 
and if it can do work at a rate of 1250 W, what is the rate of heat flow into the house?
A. 340 W B. 1100 W C. 625 W D. 300 W
A constant volume closed container of gas is at a pressure 1.00 × 105 N/m2 and a temperature 20°C. What is the pressure if the temperature of the gas is increased to 60.0°C?
A) 0.330 × 105 N/m2 B) 9.00 × 105 N/m2 C) 0.880 × 105 N/m2 D) 3.00 × 105 N/m2 E) 1.14 × 105 N/m2
Heat is:
A. energy transferred by virtue of a temperature difference B. energy transferred by macroscopic work C. energy content of an object D. a temperature difference E. a property objects have by virtue of their temperatures
In which is the temperature greater?
A) boiling-hot tea in a cup B) boiling-hot tea in a fire-engine pail C) both the same