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Water flows through a pipe at 14cfs. At a point where the pipe diameter is 18in. the pressure is 30 psi; at a second point, further along the flow path and 2 ft lower than the first, the diameter is 9in. and the pressure is 18psi. Find the pipe friction head loss between the two points. Neglect other head losses
what is the maximum weight of the crate that the system can support? What is the angle theta required for equilibrium?
Derive an equation for the reaction force (Rx) associated with conservation of momentum in a straight length of pipe of uniform diameter. Approximate the velocity as steady and uniform at each cross-section, and the fluid as constant density.
If the peak-hour factor is .90 and all of the drivers are regular users, what is the level of the service of this compound-grade freeway segment?
What is the definition of a customer? What are some examples of internal and external customers? Is the measurement of customer satisfaction different for internal customers than for external customers?
A car collided with a telephone pole and left 20 ft skid marks on the dry pavement. Based on the damages sustained, an engineer estimated that the speed at collision was 15 mph. If the roadway had a +3% grade, calculate the speed of the car at the..
A rectangular block of aluminum 30 mm × 60 mm × 90 mm is placed in a pressure chamber and subjected to a pressure of 100 MPa. If the modulus of elasticity is 70 GPa and Poisson's ratio is 0.333
For a mixed liquor volatile suspended solids (MLVSS) of 1800 mg/L, what is the total return solids flow rate?
The compound bar carries the axial forces P and 2P. Find the maximum allowable value of P if the working stresses are 40 ksi for steel and 20 ksi for aluminum, and the total elongation of the bar is not to exceed 0.2 in.
A trapezoidal channel with base width 5m and side slopes 2 horizontal to 1 vertical, slopes at 0.0005. If n=0.010, what is the flow rate for a normal depth of 1m, 2m, 4m
calculate the depth h of mud for which the 3m concrete retaining wall is on the verge of tipping about its forward edge A. the density of mud may be taken to be 1760 kg/m3 and that of concrete to be 2400 kg/m3.
Find the correction for the calibration of the measuring tape using its formula. During the calibration of the measuring tape on comparator of 100.000m the length of the tape turned out to be of 99.993m
At the same instant the frame h, not the horizontal blade, rotates about a vertical axis with a constant angular velocity w=0.9 rad/s, measured relative to h
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