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Air is compressed in a piston-cylinder assembly from an initial pressure and temperature of 16 psi and 530 oR to a final volume of 1.25 ft3 The compression process is described by the equation Pv12 = • ' constant. The mass of air is 0.5 Ibm. Assume ideal gas behavior and neglect kinetic and potential energy effects. a) Determine the work in BTU b) Determine the heat transfer in BTU using: • Temperatures and constant specific heat evaluated at 530 oR • Internal energy data from Table A-22E c) Compare the results for (b) and discuss. d) What do the sign conventions for Wand Q mean?
two identical cars a and b are at rest on a loading dock with brakes released. car c of a slightly different style but
air conditioning1- cooling and heating load estimate using camel program library and the data from da-9 perform a
In the idealized model attached shown, m = 15 kg, k = 135 N/m, and the viscous damping ratio is 0.15. Assume that an external harmonic force F(t) = 15 cos 4 t acts on the system with F0=15 N and forcing frequency of 4 rad/s.
A cooking pan whose inner diameter is 20 cm is filled with water and covered with a 4-kg lid. If the local atmospheric pressure is 101 kPa, determine the temperature at which the water starts boiling when it is heated.
Consider a flow with a pressure and temperature of 2332 lb/ft2 and 498 deg. R, respectively. A Pitot tube is inserted into this flow and measures a pressure of 8065.2 lb/ft2. What is the velocity of this flow? Is the flow supersonic? Use appen..
Determine Compressor Size in Watts that is suitable to satisfy certain specific needs, The drinking water needs in a production facility with 20 employees is to be met by a water bubbler type water fountain.
the tank has a 180mm diameter and 12 mm wall thickness. knowing that the tank contains compressed air under a pressure of 8 Mpa, determine the magnitude t of applied torque for which the maximum normal stress in tank is 75 Mpa.
If cable spacing is 1 m into the paper, what is the cable tension.
heat treatment is common in processing semiconductor materials. a 200- mm-diameter silicon wafer with thickness of 725
the hawkins supply company is currently faced with an inventory rotation problem.this difficulty stems from the fact
a ten-station rotary indexing machine performs nine machining operations at nine workstations and the tenth station is
An auto speedometer is graduated in 5 mph increments and has an accuracy rated to be within ±4%. Estimate the uncertainty in indicated speed at 60 mph.
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