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A constant pressure piston/cylinder contains 0.5 kg air at 300 K, 400 kPa. Assume the piston/cylinder has a total mass of 1 kg steel and is at the same temperature as the air at any time. The system is now heated to 1600 K by heat transfer from a 1700 K source. Find the entropy generation using constant specific heats for air.
An external moment of magnitude 110 N-m is applied in the counter clockwise direction as shown. A frictional moment of magnitude 10 N-m resists the rotation. The specific weight of the material is 250 lbs / ft3.
Two soil samples, each having a void ratio of 0.76 and density of 2.65 grains have degrees of saturation, respectively, 85% and 100%. Determine the overall specific weight of each of the samples.
A cylinder fitted with a piston has a volume of 2ft^3 and contains 0.5 lbm of steam at 60 psia. Heat is tranferred to the stream until the temperatureis 500 F, while the pressure remains constant
Literature Review for the materials used in the construction of public swimming pools - After each paragraph must put the reference in a "Harvard reference system"
For a three span continuous beam ( three 20' spans ), subjected to some uniform load, what is Cb for each span. Assumed the beam is braced against translation and rotation at each support.
A 1-inch elevator cable is 1000 feet long. The modulus of elasticity for the cable is 25,000,000 psi. Determine the total elongation of the cable due to a load of 20,000 pounds.
mg/L of salt. The new owners propose to flush the pond into their discharge pipe leading to the Atlantic Ocean, which has a salt concentration above 30,000 mg/L.
Assuming the following equation represents the true distribution in the vertical, determine the actual distance below the surface at which the velocity, u, equals the depth-averaged velocity, U.
How is the soil being loosened and carried away? What is being done with the excavated soil? What type of foundation is being installed? What provisions are being made for keeping the substructure permanently dry?
Draw the phreatic surface for the earth dam shown in Figure P14.7. Determine the flow rate within the dam if k = kx = 1 ×10-6 cm/s.
Determine largest load P that can be applied without any cable exceeding its yield strength. Bar length in 10 ft with aluminum directly in the center and steel cables 5 feet on either side. Steel cable lengths are 8 ft and aluminum cable is 10 ft...
An industrial waste water treatment plant discharges into a large river. the industrial waste water is at 1m^3/s and contains an ultimate BOD concentration of 300mg/L at a temperature of 30 degrees C and a DO concentration
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