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A rigid 1.0 m3 tank contains water initially at 120°C, with 50% liquid and 50% vapor, by volume. A pressure-relief valve on the top of the tank is set to 1.0 MPa (the tank pressure cannot exceed 1.0 MPa-water will be discharged instead). Heat is now transferred to the tank from a 200oC heat source until the tank contains saturated vapor at 1.0 MPa. Calculate the heat transfer to the tank and show that this process does not violate the second law.
find max stress sigmatheta. the cylinder is hollow in the center one layer of steel inside and a layer of brass
the volume of a cylinder is to be determined from measurements of the diameter and length. if the length and diameter
a hovercraft has a square planform a mass of 1.8 kg and has a plenum pressure requirement of 125 pa. a levitation fan
the open water tank is resting on a frictionless plane. the capped orifice on the side has a 4-cm diameter exit pipe
consider an alcohol and a mercury thermometer that read exactly 0 c at the ice point and 100 c at the steam point. the
a whip crack is illustrated below. to crack the whip it is thrown forward with a velocity of 10 ms and the handle is
(a) Determine the blade angles at leading and trailing edges of both the rotor and stator at the mean radii, (b) Calculate the mass flow rate and the power required for each stage.
consider a reheat cycle with steam leaving the boiler and entering the turbine at 4 mpa and 400 c . after expanded in
steam enters a well-insulated turbine operating at steady state with negligible velocity at 4 mpa 320c. the steam
a 4.0 a current is set up in a circuit for 7.0 min by a rechargeable battery with a 3.0 v emf. by how much is the
the following data were obtained in a resin burn-off test of an e-glass-polyester sample weight of an crucible
1 a 10-cm long and 20-cm wide circuit board is covered with 100 closely spaced chips each generating heat at a rate of
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