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The great sandini is a 60.0-kg circus performer who is shot from a cannon (actually a spring gun). you donât find many men of his caliber, so you him design a new gun. this new gun has a very large spring with a very small mass and a force constant of 1100 n/m that he will compress with a force of 4400 n. the inside of the gun barrel is coated with teflon, so the average friction force will be only 40.0 n during the 4.00 m he moves in the barrel. at what speed will he emerge from the end of the barrel, 2.50 m above his initial rest position?
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Awelder using a tank of volume 7.50Ă10^-2 m^3 fills it with oxygen (with a molar mass of 32.0 g/mol ) at a gauge pressure of 3.30Ă10^5 pa and temperature of 37.1 âc. the tank has a small leak, and in time some of the oxygen leaks out. on a day when the temperature is 23.1 âc, the gauge pressure of the oxygen in the tank is 2.00Ă10^5 pa . a) find the initial mass of oxygen. b) find the mass of oxygen that has leaked out.
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