How would the force of gravity between two objects change if the mass of each object were doubled?
A. The force between them would be 1/2 the force with the initial
separation
B. The force between them would be 4 times larger than with the
initial masses.
C. The force between them would be 1/4 the force with the initial
separation.
D. The force between them would be 2 times larger than with the
initial masses.
SUBMIT

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)