Two bowling balls are at rest on the floor. One bowling ball has a mass of 5 kg and the other bowling ball has a mass of 8 kg. The same amount of net force (5 N) is applied to each bowling ball over the same time period. Which of the following is most likely to happen?
A.
The 5 kg bowling ball will reach a constant speed before the 8 kg bowling ball.
B.
The 8 kg bowling ball will reach a constant speed before the 5 kg bowling ball.
C.
The 8 kg bowling ball will speed up faster than the 5 kg bowling ball.
D.
The 5 kg bowling ball will speed up faster than the 8 kg bowling ball.

Air enters a gas turbine with two stages of compression and two stages of expansion at 100 kpa and 17°c. this system uses a regenerator as well as reheating and intercooling – the intercooler returns the air to the inlet temperature. the pressure ratio across each compressor is 4 ; 300 kj/kg of heat are added to the air in each combustion chamber; and the regenerator operates perfectly while increasing the temperature of the cold air by 20°c. determine the system’s thermal efficiency. assume isentropic operations for all compressor and the turbine stages and use constant specific heats at room temperature. (0.378)