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A piston-cylinder device contains 4 kg of argon at 250 kPa and 35oC. During a quasi-equilibrium, isothermal expansion process, 15 kJ of boundary work is done by the system, and3 kJ of paddle-wheel work is done on the system. Determine the heat transfer for this process.
Consider a system consisting of liquid water initially at T1 = 318 K, p1 = 3.5 bar undergoing a process to a final state at T2 = 353 K, p2 = 1.5 bar. Use appropriate equation with the data from the table to evaluate change in specific entropy.
determine the terminal velocity of a 75-mm diameter sphere made of solid aluminum specific weight 26.6knm3 in free fall
a thin metal plate is insulated on the back and exposed to solar radiation on thenbspfront surface. the exposed surface
You notice that the ceramic coffee mugs in the office get too hot to hold about 10 seconds after pouring in the hot coffee. The wall thickness of the cup is 2mm. What, approximately, is the thermal diffusivity of the ceramic of the mug? According to ..
Draw a schematic of the system @ t = t0, identifying all the key properties of the system, boundary, surroundings, etc.At some intermediate time t = t1, the pressure in the tank is equal to Psurr
Determine the mass flow rate through the nozzle for a nozzle throat area of 50 cm2when the back pressure is (a) 0.7 MPa and (b) 0.4 MPa.
a pipe in a manufacturing plant is transporting superheated vapor at a mass flow rate of 0.3 kgs. the pipe is 10 m long
What is the movement of pin D in the horizontal direction in the truss shown in Fig. 3.27? The members are identical in cross-section having the same modulus of elasticity.
suppose 550 g of aluminum which has been heated to 150 c is added to 100 g of water which is at a temperature of 25 c.
In the TWA Flight 800 tragedy the accident is blamed on explosion of fuel vapors in the central fuel tank. The volume of the central fuel tank is 18,000 gal. For jet fuel the energy of explosion is 18,590 Btu/lb and the molecular weight is 160.
The steel shaft (Gst = 10.8×103 ksi) is made from two segments: AC has a diameter of 0.5 in L=5in, and CDB has a diameter of 1 in Lcd=8 in Ldb=12 in. If it is fixed at its ends A and B and subjected to a torque of 500 lb-ft,
a 20-kg uniform cylindrical roller initially at rest is acted upon by a 90-n force as shown. knowing that the body
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