Select the correct answer.
the height of the empire state building is 318.00 meters. if a stone is dropped from the top of the building, what is the stone's velocity just
before it strikes the ground?
a -1.75 meters/second
b. -18 meters/second
oc -79 meters/second
d. -636 meters/second
rese:
next
ftum. com/assessments delivery/ua/mtlaunch/49154520/45372 695/ahrochm6ly9m msshchauzwrizw5odwouy29tl2xdyxjuzxi vc2vjb25kyxj5l2xyxjuaw5ndgf0ac9pmen t

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)