Physics, 23.06.2021 22:00 makayyafreeman
15. A car is driving north at a steady speed. It makes a gradual 90°
left turn without losing speed, then continues driving to the
west. Draw a motion diagram, using the particle model, show-
ing the car's velocity vectors as seen from a helicopter hovering
over the highway.
Answers: 2
Physics, 22.06.2019 18:00
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)
Answers: 3
15. A car is driving north at a steady speed. It makes a gradual 90°
left turn without losing speed...
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