*15-128. The nozzle has a diameter of 40 mm. If itdischarges water uniformly with a downward velocity of20 m/s against the fixed blade, determine the vertical forceexerted by the water on the blade. p, = 1 Mg/m³.40 mm45°45°

Consider the diagram shown below for the flow over the vane.

Answered: *15-128. The nozzle has a diameter of…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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2.14 A 4-in.-dia. stream of water strikes the conical deflector as shown. Determine the flow rate from the stationary jet if a 10-lb force is measured on (a) a stationary deflector and (b) a deflector moving to the right at 20 fps.
If the absolute velocity of the blade is 70 fps; the velocity of the water relative to the blade is 100 fps and the angle between them is 60°, determine the angle (in degrees)between absolute velocities (i.e. of the water and the blade).
If the relation between speed (u) and density (k) is given by: u = ae-bk where a and b are constants. (e=natural base logarithm) Determine the maximum flow.
The balloon has a mass of 25 g (empty) and it is filled with air having a temperature of 20 ∘C having the density of 1.202 kg/m3. If it is released, it begins to accelerate upward at 8 m/s2 Determine the initial mass flow of air from the stem. Assume the balloon is a sphere having a radius of 180 mm .
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Water, issuing vertically from a nozzle having a diameter of 25 mm, flows out under a head of 30 m. If C = Cv = 0.98, determine at what constant height could the jet of water support a load of 200 N vertically from the nozzle tip?
An elbow deflects water upward and discharges it to the atmosphere at a specific rate. Determine the gage pressure at the inlet of the elbow and the anchoring force needed to hold the elbow in place. (gage pressure at the outlet is zero)
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A 3"-diameter jet has a velocity of 110 fps. It strikes a blade moving in the same direction at 70 fps. The deflection angle is 150°. Assuming no friction, determine the final absolute velocity of the water V2 as it leaves the blade.
The pipe bend shown is in a horizontal plane. Oil with a specific gravity of 0.86 enters the reducing bend at section A with a velocity of 3.2 m/s and a pressure of 150 kPa. Determine(a) Thevelocity(m/s)atsectionB.(b) Thepressure(kPa)atpointB.(c) FP (x-direction),(d) FP (y-direction),(e) The magnitude and direction of FRX of the force required to hold the bend in place.(f) The magnitude and direction of FRY of the force required to hold the bend in place.Forces are to be expressed in Newtons.
If the velocity of discharge from a fire hose is 23 m/s and the hose is oriented at 40º from the horizontal, disregarding air friction, determine the maximum range of discharge (in m).

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*15-128. The nozzle has a diameter of 40 mm. If it discharges water uniformly with a downward velocity of 20 m/s against the fixed blade, determine the vertical force exerted by the water on the blade. p, = 1 Mg/m³. 40 mm 45° 45°