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A horizontal 150mm pipe, in which 40 l/s of oil (S=.8) is flowing, contracts to a 75 mm diameter (left to right). If the pressure in the 150mm pipe is 300kPa, calculate the magnitude and direction of the horizontal force exerted on the contraction (not on the water). Assume that there is no loss of energy in the contraction. Use the gamma of water is equal to 1000 kg/m^3
The path of motion of a 7-lb particle in the horizontal plane is described in terms of polar coordinates as r= (3t+2) and theta=(0.2t^2-t) , where t is in seconds. Determine the magnitude of the unbalanced force acting on the particle when t=3s.
Draw the free-body diagram of member ABC which is supported by a smooth collar at A, rocker at B, and Find the Find the force of CD, and the force acting at point A & B
a certain pesticide is fatal to fish fingerlings at a level of 0.5 parts per million in water. a leaking metal can
The beam has a rectangular section which is to be singly reinforced. Given pt=1.1% design and detail the steel reinforcement for the section where the moment is maximum
A hotel room has a floor area of 10 m by 4 m and is 2.5 high and has a window which is 1.6 m high and 3 m wide. The room contains some furniture and other commodities containing 50 kg polyurethane with 25 MJ/kg and 350 kg wood with 18 MJ/kg.
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
The arrival rate at a parking lot is 6 veh/ min. Vehicles start arriving at 6: 00 P. M., and when the queue reaches 36 vehicles, service begins. If company policy is that total vehicle delay should be equal to 500 veh-min, what is the departure ra..
A steady flow of refrigerant 134a enters a throttling valve in a refrigeration unit as a satrurated liquid with a pressure of 150 psia. The refrigerant is discharged with a pressure of 40 psia.
Stripping overburden in the Illinois coal belt, the Dusty Coal Company uses 270-horsepower, track-type tractors (with direct-drive transmissions) and drawn scrapers.
A runner weighing 150 pounds has just completed a 10-mile course in 1.25 hours. How much power, in unit of watts, was used by the runner's body?
The steel ball is suspended from the accelerating frame by the two cords A and B. Determine the acceleration a of the frame which will cause the tension in A to be twice that in B.
The distance from the center of the plate to the point of contact between the plate and the roller is 12 cm. The radius of the roller is 0.5 cm. Assuming no slip between the wheels and the plate, determine the rotational speed of the rollers.
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