Physics, 26.08.2019 23:30 franky2871
the pressure inside a champagne bottle can be quite high and can launch a cork explosively. suppose you open a bottle at sea level. the absolute pressure inside a champagne bottle is 6 times atmospheric pressure; the cork has a mass of 7.5 g and a diameter of 18 mm. assume that once the cork starts to move, the only force that matters is the pressure force.
what is the acceleration of the cork? express your answer with the appropriate units.
Answers: 2
Physics, 22.06.2019 10:30, gyexisromero10
Air is to be preheated by hot exhaust gases in a cross-flow heat exchanger before it enters the furnace. air enters the heat exchanger at 95 kpa and 20°c at a rate of 0.6 m^3/s. the combustion gases (cp = 1.10 kj/kg°c) enter at 160°c at a rate of 0.95 kg/s and leave at 95°c. determine the rate of heat transfer to the air and its outlet temperature.
Answers: 2
Physics, 22.06.2019 11:10, axxpjr12
Consider an insulating crystal, made up of layers of atoms. what form would you expect the temperature dependence of the phonon heat capacity to approach at extremely low temperatures if the interlayer coupling is i)very strong (rigid coupling), and ii) very weak. explain.
Answers: 3
Physics, 22.06.2019 14:40, viktoria1198zz
14. a body is projected with velocity vi from a. at the same time another body is projectedvertically upwards from point b withvelocity v2 lies vertically below the highestpoint. both the bodies collide thenv2÷v1is
Answers: 1
the pressure inside a champagne bottle can be quite high and can launch a cork explosively. suppose...
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