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1.A cylindrical tank 5-m in diameter is filled with water to 3-m depth. A very short horizontal pipe with 20-cm diameter and rotary valve is used to drain the tank from the bottom. How long does it take to drain the tank to 50%?
2.Water flows through a 4-cm pipe, wrought iron, horizontal pipeline 50-m long from point A to B, and contains a fully opened gate valve and two elbows (R/D = 4). If the pressure downstream at B is 192 KPa and flow rate is 0.006 m^3/s, what is the pressure at point A?
3.A 100 mm long rod has a diameter of 15 mm if an axial tensile load of 10kn is applied to it determine the change in its diameter
E = 70
Gpa, v = .35
Determine the normal stress in the rails when the temperature reaches 48oC assuming that the rails (a) are welded to form a continuous track (b) are 10m long with 3 mm gaps between them.
A stabilization pond is designed for a 35-day detention time. If the pond is maintained at a capacity of 40 acre-feet, what is theaverage gpd flow to the stabilizaiton pond
A wastewater treatment plant has two rectangular primary settling tanks, each 40 ft long, 12 ft wide, and 7 ft deep. The effulent weir length in each tank is 45 ft. The average daily wastewater flow is 387,000 gal.
If the steel is decarburized in vacuum at 1000 C for one hour, calculate the carbon concentration in steps of 0.2 mm as you go into the depth of the steel (starting with x=0 at the surface) until you reach the overall concentration of 0.3 wt % car..
Determine the compressive strengths of the following
A system consists of a gas confined between a cylinder and piston such that work and heat may cross the boundary. What type of system is that. What type of system is a free body as used in mechanics or civil engineering.
It rains an average rate of 0.4 in/hr in a 600 acre watershed for 3 days. Determine: a) average rainfall rate in cfs b) rainfall volume for the 3 days in acre-ft c) rainfall volume in inches.
The storage in a reach of river is 20,000 m^3 at a given time. Determine the storage 1 hr later if the average rates of in flow and out flow during the hour are 20 and 18 m^3/s, respectively
Write a script newquot.m that uses the Newton quotient, [f (x + h) - f (x)]/h, to estimate the first derivative of f (x) = x3 at x = 1, using successively smaller values of h: 1, 10-1, 10-2, and so forth. Use a function M-file for f (x).
Barron Chemical uses a thermoplastic polymer to enhance the appearance of certain RV panels. The initial cost of one process was $130,000 with annual costs of $49,000 and revenues of $78,000 in year 1, increasing by $1000 per year.
A circular beam length 36 inches and diameter 1 inch is supported on the left end by a pin joint and the right end with a roller. The beam is under axial tension with forces of 1000 lbs out of each end.
An ethanol plant distills alcohol from corn. The distiller processes 2.0 t/h of feed containing 15% alcohol and 82% water; the rest is inert material. The bottoms (waste) produced is 85% of feed and contains 94% water, 3.5% alcohol, and 2.5% inert..
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