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Two large water reservoirs are connected by 8,000 ft of schedule 40 steel pipe. The level of one reservoir is 500 ft above the level of the other, and water is flowing steadily through the pipe from one reservoir to the other. Both reservoirs are open to the atmosphere. We would like to obtain a flow of 15,000 gpm. What size pipe should we use?
Estimated rolling resistance factor the haul road is 3000 lb/ton. If the scraper weighs 35,000 lb (empty) and carries 25 loose cubic yards per trip. What is the rolling resistance of the loaded unit?
calculate the change in entropy of a gas of mass 8kg when 100 kj of heat energy is supplied to the gas. the temperature of the gas remains constant at 100 c during the heat transfer process
A wood board with a 2in. by 4in. cross section is subjected to a tensile load of 100 lb. Determine the average normal stress and average shear stress developed in the wood fibers that are oriented at 30 degrees with the axis of the board.
If 500 mL of benzene is spilled in a sealed room (64m^3), and it completely evaporates, what mass of GAC filters (Cmax = 80 mg benzene/1 g GAC) will be required to reach the permissible exposure limit for benzene
At the morning break, an industrial engineer quickly measures the worker's heart rate and finds a peak value of 110 beats/min one minute after stopping work and a value of 95 beats/min three minutes after stopping work.
A 0.4 kg mass m is rotating on a horizontal, frictionless surface, its motion constrained by a massless, inextensible string. The distance from the string's attachment point, O, to the mass is a constant.
1. a watershed contains 16.2 ha and 24.3 ha of agricultural and residential land use respectively. the last rainfall
a ball is thrown with a valocity of 30 m/s at an angle of 40 degrees above the horizontal from the top of a 100m tall building. what is balls velocity when it lands. (neglect air resistance in both cases) DO NOT USE 2D projectile motions, only work ..
A Rankine cycle has a boiler pressure of 2500 psi and a condenser pressure of 1psi. The temperature at the inlet of the turbine is 800F. The turbine has an isentropic efficiency of 90 percent and the pump operates isentropically.
In what direction did the cue ball move after the collision? What percentage of its kinetic energy did the cue ball impart to the eight ball?
Cylinders C and D are attached to the end of the cable. if D has a mass of 600 kg, determine the required mass of C, the maximum sag h of the cable, and the length of the cable between the pulleys A and B.
During the process 40 kJ of heat is transferred from the sphere, while the sphere receives energy in the form of work equal to 20kcal. calculate the change in the sphere's internal energy in kJ.
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