SpecialProblems5-7ME200SP2012

# SpecialProblems5-7ME200SP2012 - Special Problems for ME 200...

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Special Problems for ME 200 – Spring 2012 Special Problems SP5, SP6, and SP7 Due Friday, January 27, 2012 SP5: A 25-kg piston in the piston-cylinder system shown in Figure SP 5 is initially at rest on the bottom stops and the gas inside the cylinder has an initial pressure of 70 kPa and an initial temperature of 10 o C (State 1). The gas inside the cylinder is heated until the piston just leaves the bottom stops (State 2). Additional heat is added to the cylinder until the piston just hits the top stops (State 3). The pressure surrounding the cylinder is 101 kPa and the volume of the stops and the piston can be neglected. The gas inside the cylinder can be considered an ideal gas, pV = mRT, where p = pressure, V = volume, m = mass of the gas, R is a constant and T = absolute temperature of the gas. Figure SP5 (a) Calculate the work in going from State 1 to State 2, in kJ. (b) Find the work in going from State 2 to State 3, in kJ. (c) Determine the temperature at State 2, in K.

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SpecialProblems5-7ME200SP2012 - Special Problems for ME 200...

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