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An insulated, vertical piston-cylinder device initially contains 10 kg of water, 8 kg of which is in the vapor phase. The mass of the piston is such that it maintains a constant pressure of 300 kPa inside the cylinder. Now steam at 0.5 MPa and 350oC is allowed to enter the cylinder from a supply line until all the liquid in the cylinder has vaporized. Determine (a) the final temperature in the cylinder and (b) the mass of the steam that has entered. Tf =133.6oC and m=9.78kg.
In the paragraphs that follow, answers are provided to a number of key questions about desogestrel-only pills. What is the desogestrel-only pill?
a weight attached to a spring of stiffness 525 nm has a viscous damping device. when the weight is displaced and
A steel alloy to be used for a spring application must have a modulus of resilience of at least 2.07 MPa (300 psi). What must be its minimum yield strength?
a rigid tank contains 20 lbm of air at 50 psia and 80o f. the air is now heated until its pressure doubles. determine
what are the four basic families of shape-production processes? Cite one advantage and one limitation of each family.
(a) Find the speed of the bucket (b) How fast must the bucket move at the top of the circle so that the rope does not go slack?
Working with boiler suspension bolts. An HRT boiler is 4766mm long and 3533mm in diameter. It has 66 steel tubes with a diameter of 9mm. The total dry weight of the boiler is 2.565 tonnes
Refrigerant 134a at 700 kPa and 40oC is expanded adiabatically in a closed system to 60 kPa. Determine the work produced, in kJ/kg, and final enthalpy for an isentropic expansion efficiency of 80.
in a pharmaceutical plant a copper pipe kc 400 wm.k with inner diameter of 20 mm and wall thickness of 2.5 mm is used
a vertical piston-cylinder device initially contains 0.25 m3 of air at 600 kpa andnbsp300degc. a valve connected to the
during an emergency launch operation to fill a missile with rp-4 the volume of a well insulated fuel storage tank is
compute the second specimen's radius after deformation.
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