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A frictionless piston-cylinder device and a rigid tank initially contain 12 kg of an ideal gas each at the same temperature, pressure, and volume. It is desired to raise the temperatures of both systems by 15°C. Determine the amount of extra heat that must be supplied to the gas in the cylinder which is maintained at constant pressure to achieve this result. Assume the molar mass of the gas is 25.
Saturated liquid water at 1000 kPa flows at 2 kg/s inside a 10 cm outer diameter steel pipe and outside of the pipe is a flow of hot gases at 1000 K with a convection coefficient of h = 150 W/m2 K.
What DO will result if the concentration of the waste(Lw) is reduced by 50%? Assume that the flows remain the same and that the saturation value of DO is 10.83 mg/L in both cases.
A block with an inclination of 20 degrees has a weight of 60kg, a height of 1.8m and width 1m, static friction is 0.3, what is the force needed and the height (where the force in the box should be) to pish it upwards
Design a reinforced concrete wall footing for (a) a 10-in. reinforced concrete wall and (b) a 12-in. masonry wall. The intensity of service linear dead load is WD = 20,000 lb/ft and a service linear live load WL = 12,000 lb/ft of wall length. Assume ..
the car weighs 2450 lb, the mechanical efficiency of the drivetrain is 90% and the wheel radius is 14 inches. the base engine develops 200 ft-lb of torque, and a modified version of the engine develops 240 ft-lb of torque.
Assume that the sludge does not change density during filtration and that liquid removed from the sludge contains no sludge. Using mass-balance method. determine the volume of sludge after filtration.
Determine the uniform flow depth in a trapezoidal channel with a bottom width of 8 ft and side slopes of 1 vertical to 2 horizontal. The discharge is 100 ft3/s. Manning roughness factor is 0.015 and the channel bottom slope is 0.004.
vehicles begin to arrive at a toll booth at 850 am with an arrival rate of xt 4.1 .01t with t in min and xt in veh
An ideal reheat rankine cycle operates between the pressure limits of 20 kPa and 10 MPa, with reheat occuring at 3 MPa. The temperature of steam at the inlets of both turbines is 500 C
A concrete mix with a 3-inch slump, w/c ratio of .50, and sand with a finesse modulus of 2.4 contains 1700 lb/yd^3 of coarse aggregate per cubic yard. To adjust the mix so as to increase the compressive strenght
a horizontal curve on a two-lane highway 12-ft lanes has pc at station 123 80 and pt at station 129 60. the central
The project scope includes the design of a new private school building in Chicago - Design of the future expansion is also excluded from the current scope, however provisions have been made in the structural and services design for the future exp..
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