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The figure shows a mixing tank initially containing 2000 lbm of liquid water. The tank is fitted with two inlet pipes, one delivering hot water at a mass flow rate of 0.8 lbm/s and the other delivering cold water at a mass flow rate of 1.2 lbm/s. Water exits through a single exit pipe at a mass flow rate of 2.5 lbm/s. Determine the mass of water,in lbm, in the tank after 30 minutes
one kg steam with a quality of 0.2 is heated in a pistoncylinder vessel at a constant pressure of 200 kpa unit the
If a power plant rejects heat of 30,000,000kW/day into a nearby lake with 16,000 acre feet of water, how fast in degrees/day will the temperature of the lake rise if it is assumed that the lake is insulated and cannot reject heat in any other way?
The roller coaster car has a mass of 700 kg, including its passenger. If it is released from rest at the top of the hill A, determine the minimum height h of the hill crest so that the car travels around both inside the loops without leaving the tr..
(a) The mechanical efficiency of the pump and (b) The temperature rise of water as it flows through the pump due to the mechanical inefficiency.
the 50-kg crate is now projected down an incline as shown with an initial speed of 7 ms. investigate the time t
in a compton experiment an electron attains a kinetic energy of 0.1 mev when a 0.5mev x-ray strikes it. determine the
Electric flux density in dielectrics. A point charge is located in free space. The charge is surrounded by a spherical shell, with inner diameter r1 , outer diameter r2 , and permittivity e. Calculate the electric flux density everywhere in space.
a pump steadily draws water at a mass flow rate at 20 lbms through a piping arrangment. at the pipe inlet the pressure
a 12-in. length of aluminum tubing with properties of e 10.4 times 106 psi and alpha 12 times 10 -6 per degree
a steam turbine operates with 1.6 mpa and 350o c steam at its inlet and saturated vapor at 30o c at its exit. determine
(i) Establish the fixed point. (ii) Derive the equations for the two isoclines and establish the vector of forces. (iii) Derive the equation for the stable and unstable arms.
a well insulated piston-cylinder assembly is connected to an air supply line at 8 bar as shown in the figure. initially
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