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1.Oil with a kinematic viscosity of 0.185 St is flowing through a 150-mm diameter pipe. Below what velocity will the flow be laminar?
2.Stream with a specific weight of 38 N/m^3 is flowing with a velocity of 35 m/s through a circular pipe with f=0.0154. What is the shear stress at the pipe wall?
3.Oil (s=0.92) of viscosity 0.00038 m^2/s flows in a 100-mm-diameter pipe at a rate of 0.64 L/s. Find the head loss per unit length.
4.When fluid of specific weight 8.2 KN/m^3 flows in a 150-mm-diameter pipe, the frictional stress between the fluid and the pipe wall is 25 N/m^2. Calculate the friction head loss per meter of pipe. If the flow rate is 42 L/s, how much power is lose per meter of pipe?
two particles start from the same point along the same straight line and at the same instant. the first particle
The motor has an efficiency of 80%. It operates at 240V AC. A 12" diameter drum is attached to the gearbox output shaft, and a wire rope is wrapped around the drum to act as a winch. The winch is used to raise bucket of raw material in a factory.
A large part of Holland is below sea level.Earthen dikes keep the sea at bay. There's a Holland legend of aboy who uses his finger to plug a hole in the dike and saves thecountry side. Assume the center of the hole is located 3.0
The man has a mass of 65kg and stands motionless at the end of the diving board. If the board has the cross section, determine the maximum normal strain developed in the board. The modulus of elasticity for the material is E = 117GPa
Submarines change their depth by adding or removing air from rigid ballast tanks, thereby displacing seawater in the tanks. Consider a submarine that has a 700m3 air-ballast tank originally partially filled with 100m3 of air at 1500 kPa and 15oC. For..
a cantilevered W12X136 (ASTM-A36) steel member beam is 18 feet in length. if a concentrated load of 12 kips is applied at a point 6.25 feet from the beam's free end, use the superposition technique
If the purlins are spaced 4 ft and the bents are spaced 25 ft apart, determine the distributed loading that acts along the purlin DF and the loadings that act on the bent at A,B,C,D, and E.
Determine the elastic and plastic section modulus of the I-beam. The axis runs through the center of the beam on both x and y axis (completely symmetrical). Beam properties: h= 12inches tf= 0.5 inches bf= 6 inches tw= 0.25 inches
Statistics indicate that the world population since World War II has been growing at the rate of 1.9% per year. Further, United Nations records indicate that the world population in 1975 was (approximately) 4 billion.
In an irrigation system sometimes water must be pumped over long distances. Consider a system that consistes of a 1 m diameter, 2 km long commercial steel pipe, which connects a river to an irrigation canal.
Determine the factors of safety against sliding and against overturning, and also the soil pressure at the heel and toe. Assume hydrostatic uplift varies uniformly from full hydrostatic head at the heel of the dam to zero at the toe. consider 1m l..
The L bracket shown below is pinned to the ground at point C and attached to a single cable at points A and D that wraps around a frictionless pulley at point B. Determine the forces acting on the bracket at point C and then tension in the cable.
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