Scientifically speaking, in which situation is no work done? A: A bowling ball is lifted off the floor to a height of 1 meter.
B: A bowling ball is carried horizontally across the room for 10 meters.
C: A bowling ball is carried up 2 flights of stairs a distance of 5 meters.
D: A bowling ball is lifted off a bench to a height of 10 meters.

An engine undergoes a cycle as shown in the diagram. during a complete cycle the work done by the gas is 28.5×103 j and the energy transferred thermally out is 99.4×103 j. there are 1.5×1024 gas molecules and they have three active degrees of freedom. 6. (6 pts) during which process(es) is energy transferred thermally into the gas? a. 1→2 b. 2→3 c. 4→1 d. 1→2 and 4→1 e. none of the above