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A gas is contained in a closed cylinder with a mobile piston at oneof its ends. For the following conditions indicate: (1) if dW= -pdV or not, and (2) if the process is reversible, quasistatic,or irreversible. Explain in each case why is one or another.a) There is no pressure form the out over the piston and there is no friction between the piston and the cylinder's walls.b) There is no external pressure and there is a small frictionbetween piston and cylinder's walls.c) The piston is pulled outwards faster than the molecules's (ofthe gas) average velocity.d) Friction adjusts in such a way that it permits the gas toexpand slowly.e) There is not friction, but the external pressure adjusts so thatit permits the gas to expand slowly.
The electromagnet produces a field that is uniform throughout the volume between the faces. Describe the electric field that results in the region between the poles
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although the evidence is weak there has been concern in recent years over possible health effects from the magnetic
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A rigid tank contains 1.40 moles of an ideal gas. Determine the number of moles of gas that must be withdrawn from the tank to lower the pressure of the gas from 27.2 atm to 5.90 atm. Assume the volume of the tank and the temperature of the gas re..
four point charges have the same magnitude of 1.9 x 10-12 c and are fixed to the corners of a square that is 6.4 cm on
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The balance wheel of a watch oscillates with an angular amplitude of n-rad and a period of 0.10 s. Find the maximum angular speed of the wheel
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