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Water at 20 degrees flows at a velocity of (V =) 2 m/s in a (D =) 250-mm diameter horizontal ductile iron pipe. Estimate the friction factor f in the pipe, and state whether the pipe is hydraulically smooth or rough. Compare the friction factors derived from (a) the Moody diagram and (b) the Colebrook equation. Estimate the change in pressure over (L =) 100 m of pipeline. How would the friction factor and pressure change be affected if the pipe is not horizontal but 1 m lower at the downstream section?
Two strips of a plastics material are bonded together as shown. The average shearing stress in the glue must be limited to 1000 kpa.
A fisherperson, pulling on the anchor cord, causes a force on the man of F=(40i+20j-50k)N. If the cord is 30m long,determine the Cartesian coordinates of the anchor at A. Assume that cord OA is a straight line.
Motor M draws in the cable with an acceleration of 4 , measured relative to the 220 mine car. Determine the acceleration of the car. Neglect the mass of the pulleys.
A bullet is fired from a height of 150m at a velocity of 300kmph at an angle of 35 upward. Neglecting air resistance. Find: a) total time of flight b) horizontal range
In the construction management, there is a lot of procurement route that are necessary and suitable for the construction industry.
a horizontal curve on a single-lane highway has its PC at station 124 + 10 and its PI at station 131 + 40. The curve has a superelvation of 0.06 ft/ft and is designed for 70 mi/h. What is the station of the PT?
Suppose the average concentration of SO2 (SOsub2) is measured to be 400microgram/cu.m at 25degree celcius and 1 atm. Does this exceed the (24-hr) air quality standard of 0.14 ppm
A regular hexagonal pyramid has an upper base edge of 16 ft. and a lower base edge of 28 ft. if the volume of the frustum is 18041 ft^3., find the lateral area of the frustum.
the unit weight of normal weight reinforced concrete is commonly assumed to be 150 lb/ft cubed. find the weight per lineal foot (lb/ft) for a normal weight reinforced concrete beam that: a. has a rectangular cross section 16 in.
where u(t) is in vehicles per minute and t is in minutes. When will the queue clear?
What is the average length of queue, the average time spent in the system, and the average waiting time in the queue?
A fully loaded, ocean going container ship is just stable about its longitudinal axis (roll). The ship has a total weight of 155,000 tons, length = 1,600 feet and a beam = 150 feet (assume that it is the shape of a rectangular box). Calculate the ..
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