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A horizontal stream of water is directed at the windscreen of a truck , as shown in the drawing.The flow rate of the water is 8 litres/s and the diameter of the nozzle is 50 mm. The water strikes the windscreen and is deflected upwards at an angle of 40o,as shown .recall that 1 litre=1000 cm3 and water has a density of 1000 kg/m3.State any additional assumptions made.Determine the resultant force in N that the water stream exerts on the windscreen for two cases.
(a) If the truck is stationary ,V truck=0.
(b) If the truck moving at a constant velocity Vmax=5 m/s in the direction shown.
air at a velocity of 35. 2 ft sec and a pressure of 793. 1 mm hg flows in a long circular pipe whose inside diameter
a can of aerosol deodorant contains one pound of a scented liquid that will vaporize and spray out when the top button
sandbag is released from hot air balloon at an altitude of 1312ft. the net effect of gravity and aerodynamic friction
Collar C moves along rod BA with a velocity of 3 m/s and an acceleration of .5 m/s^2 both directed from B towards A and measured relative to the the rod. At the same instant, rod AB rotates with the angular velocity and angular acceleration shown. De..
A dam with water on one side has a 0.01 inch crack 10 feet below the surface of water. The length of the crack is 5 ft, and the thickness of the dam at that location is 3 ft. The water temperature is 50 degrees F. determine the following: The pressur..
a geothermal vapor compression heat pump maintains the inside air supply of a building at 30 degc and operates with the
a nozzle for a carbon dioxide co2 fire extinguisher is based on the following inlet conditions pressure2500 kpa
The spring has a stiffness k=200 N/m and is unscratched when the 25 kg block is at A. Determine the acceleration of the block when s=0.4 m. The contact surface between the block and the plane is smooth (no friction).
a student takes a multiple choice exam with 10 questions each with 5 possible selections for the answer. suppose that
The mixture leaves the mixing chamber as a liquid at 45°C. If the surroundings are at 15°C, determine (a) the temperature of saturated steam entering the chamber, (b) the energy destruction during this mixing process, and (c) the second-law effici..
The cantilevered bar in the figure has a circular cross section and is subject to bending and torsion. The normal stress due to bending in x=28 kpsi and the shear stress due to torsion is xz=15.3 kpsi. The change in diameter introduces a stress conce..
derive an equation for the work of a mechanically reversible isothermal compression of 1 mole of a gas from an initial
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