In a given crt, electrons are accelerated horizontally by 7.0kv . they then pass through a uniform electric field e for a distance of 2.4cm , which deflects them upward so they travel 24cm to the top of the screen, 10cm above the center. Estimate the value of E. Neglect the upward distance that electron moves while in the electric field.
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Physics, 20.06.2019 18:02
5points ! is potential chemical energy always transformed into kinetic
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Physics, 22.06.2019 12:30
Cathy is pedaling down a steep hill on her bicycle and wants to be able to coast up the next hill, which is 25 meters high, without pedaling. cathy and her bicycle have a mass of 75 kg. assuming her bicycle is 100% efficient, what would her speed have to be?
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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)
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Physics, 22.06.2019 18:30
Asmall grinding wheel has a moment of inertia of 4.0×10−5 kg⋅m2 . what net torque must be applied to the wheel for its angular acceleration to be 150 rad/s2 ?
Answers: 3
In a given crt, electrons are accelerated horizontally by 7.0kv . they then pass through a uniform e...
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