Physics, 25.06.2019 01:00 Hjackson24
Acannonball is fired horizontally with an initial velocity of 20 m/s off a cliff that is 10 m from the ground. if the initial velocity is doubled what will be the affect on the time and horizontal distance? a) both the time and horizontal distance will double. b) neither the time or horizontal distance will change. c) the time won't change, but horizontal distance will double. d) the time will double, but the horizontal distance won't change.
Answers: 1
Physics, 22.06.2019 17:30
Aparticle moves in a circle 1.50 m in radius . through what angle in radians does it rotate if it moves through an arc length of 2.50m? what is the angle in degrees?
Answers: 1
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
Acannonball is fired horizontally with an initial velocity of 20 m/s off a cliff that is 10 m from t...
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