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A rigid 1.0 m3 tank contains water initially at 120oC, 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.
Consider a 4-in square steel bar subjected to transverse biaxial tensile stresses of 20 ksi in the x direction and 10 ksi in the y direction.
an engineer measures the diameter of 20 tubes selected at random from a large shipment. the sample yields a sample mean
boron is diffused into highly pure germanium at 1000oc q 105 kcalmol do 1.1 x 10 m2sec. a steady surface
a rectangular fuel storage tank 2.4m wide and 2m high has a volume of 40 m3. it is placed horizontally so the top of
the spring mounted slider moves in the horizontal guide with negligible friction and has a velocity vo in the
a nitrogen line 300 k and 0.5 mpa shown in the figure is connected to a turbine that exhausts to a closed initially
Determine the smallest horizontal force required to lift the 260- crate. The coefficient of static friction at all contacting surfaces is = 0.7. Neglect the mass of the wedge.
suppose you have a 50 kg block of steel. if you have 103 exajoules at your disposal how many times could you push this
the pressure in the vein is known as 1850 Pa. what force must be applied to the plunger, so that 1.5 x 10^-6 m^3 of solution can be injected in 5.0 s?
a 50-cm by 50-cm plate of pure nickel generates 3.9 mwm3 of energy uniformly within the plate. all four sides of the
air enters a turbine operating at steady state at 500 kpa 860 k and exits at 100 kpa. a temperature is 460 k. stray
the crane shown below consists of a 10 m swinging arm that is pinned at point a in the horizontal axis. the load at
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