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Supose you have one mole of an ideal gas T1=300k in a container and you want to compress it isothermally by a constant external pressure (Pext). The end of the compression process is achieved when P2=Pext. This, tehn, is a irreversible process. The initial and final volumes are V1=25L and V2=10L, repectively. If the temperature of the surroundings is 300K, then calculate dSsurr, dSsys, and dStotal in units J/K. Prove that a decrease in the entropy change of the universe will never be obseve because dStotal=>0.
The weight W causes a tension of 100lb in cable CD. If d= 2ft, what is the momentum about the z axis due to the force exerted by the cable CD at point C?
the elevator e has a mass of 500kg and the counterweight at a has a mass of 150kg. if the motor supplies a constant
A piston-cylinder device contains 0.005 m3 of liquid water and 0.9 m3 of water vapor in equilibrium at 600 kPa. Heat is transferred at constant pressure until the temperature reaches 200°C.
a mountain climber determines his altitude using atmospheric pressure and temperature measurement data. he uses a
create the main window shown here. you may use any layout manager or you may lay the components out manually.when a
the manometer shown above in problem 1 above contains water and kerosene. with both tubes open to the atmosphere, the free surface elevations differ by H=20mm determine the elevation difference when a pressure of 98.0 Pa is applied to the right.
consider a naca 0009 airfoil that has a plain flap whose length is 0.2c and which is deflected 25. a. calculate cl and
a 0.5m3 rigid tank contains refirgerant r-134a initially at 200 kpa and 40 quality. heat is now transferred untill the
consider an ideal steam regenerative cycle in which steam enters the turbine at 600 lbfin2 700 f and exhausts to the
a potato is baked in an oven at 200degc. the potato is then removed from the oven and put on a table in the kitchen.
what was its velocity during this time? (Hint: Take the origin to be the location of the radar.)
a driver of a car is repeatedy driving around a roundabout with a diameter of 100feet . the driver is traveling around
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