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the water exiting a 2.5 cm diameter nozzle which is atrtached to a 7.6 cm diameter fire hose is discharged at a velocity of 25 m/s. the pressure in the hose is 380 kpa. what is the magnitude and direction of the force of the water n the nozzle, if the nozzle is held steady/2- what is the FORCE if the fire fighter is running towards the fire, with the hose at a velocity of 1.5 m/s
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..
The pulley at B is connected to a motor that is driving the system. The other three pulleys are consuming the power delivered by Pb . Pa = 20kW, Pb = 75kW, Pc = 30kW, and Pd = 25kW and the shaft is rotating at 120rpm.
If john borrows $6346.40 now to buy a car (the car does not include the down payment) and makes monthly payments of $220 for 36 months beginning one month from now
A PVC pipe with a diameter of 30 inches will carry a flow of 20 cfs. the bottom slope is 0.005 and the roughness coefficient is 0.015. determine the normal depth, critical depth, velocity and the froude number.
Determine the unstretched length of spring AC if a force P = 110 lb causes the angle theta = 60^circ for equilibrium. Cord AB is 2 {rm ft} long. Take k = 50;{rm lb/ft}
A construction firm purchased 3 tractors from a certain company. At the end of the fifth year, let E1, E2, E3 denote, respectively, the events that tractors no. 1, 2, and 3 are still in good operational condition.
What kind of soil labs are good for the construction which is underlying the wet clay is dense sand. For example, compaction, and so on.
A separator accepts waste oil at 70% oil and 30% water by weight. The top product stream is pure oil while the bottom underflow contains 10% oil. If a flow of 20 gal/min is fed to the tank, how much oil is recovered
Draw block diagrams of the unit operations necessary to treat the following wastes to effluent levels of BOD5 = 200 mg/L, SS = 100 mg/L, P = 5 mg / L (required for discharge into a sanitary sewer).
Normal load at failure was 93.8N with a maximum shear load of 38.7N. Find stresses on the failure plane, sketch a graph showing these on the shear stress and normal stress axes. Find the friction angle and shear strength.
Solid waste will be applied in 0.6 m "lifts" and will be compacted to a depth of 0.3 m. Daily cover soil will be applied to a depth of 0.15 m for the first four days of the operation in any week. At the end of the fifth day, a "weekly cover" layer..
Explain about pres-stressed concrete
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