Chapter 18 Q
When a system does work without adding heat, the temperature of the system
decreases.
As a parcel of air at high altitude sinks to a lower elevation with no heat input or output, its temperature
increases.
The lowest temperature possible in nature is
-273 degrees C.
If a 5°C piece of iron is heated until it has twice as much internal energy, its temperature will be
283°C.
The change in internal energy of adding 100 joules to a system that does 60 joules of work is
40 J.
The ideal efficiency for a heat engine operating between the temperatures of 227°C and 27°C is
40%.
A heat engine would have 100% efficiency if its low-temperature reservoir were
at absolute zero.
A quantity of water has more entropy when it is
boiling.
Harry places a new air conditioner in the middle of his hot room, which when operating
further warms the room.
When an ideal gas is subjected to an adiabatic process
none of the above
