Physics, 20.01.2021 19:20, dancinggrace2032

If a star is 300 light years from Earth, how long does it take light from that star to reach earth?

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Physics, 22.06.2019 12:10, zoebtharpe

Does anyone have the answers to online physics course plato course physics, semester a v3.0

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Physics, 22.06.2019 18:00, maren17

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)