3.2 Perhaps you have felt the end of a garden hose exert a backward force on your hand if (and only if) you have attached a nozzle. Let's estimate this force. Assume that the x-axis is aligned with the end of the hose, and points in the direction of the water flow. (a) Assume that the hose delivers water at the rate of 1l = 1000 cm 3 that the hose has a cross section of 1 cm². Estimate the speed of the water in the hose. (b) Use your result from part (a) to estimate the impulse [Apz]enter transferred every second to the nozzle by the water entering the nozzle (one liter of water has a mass of one kg). (c) The nozzle forces the water to leave the nozzle through an opening that has a cross section smaller than that of the hose. Let's assume that the nozzle's cross section is 0.5 cm². Estimate the speed at per second to the nozzle, and which the water leaves the nozzle.

3.2 Perhaps you have felt the end of a garden hose exert a backward force on your hand if (and only if) you have attached a nozzle. Let's estimate this force. Assume that the x-axis is aligned with the end of the hose, and points in the direction of the water flow. (a) Assume that the hose delivers water at the rate of 1l = 1000 cm 3 that the hose has a cross section of 1 cm². Estimate the speed of the water in the hose. (b) Use your result from part (a) to estimate the impulse [Apz]enter transferred every second to the nozzle by the water entering the nozzle (one liter of water has a mass of one kg). (c) The nozzle forces the water to leave the nozzle through an opening that has a cross section smaller than that of the hose. Let's assume that the nozzle's cross section is 0.5 cm². Estimate the speed at per second to the nozzle, and which the water leaves the nozzle.

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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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Question

3.2 Perhaps you have felt the end of a garden hose exert a backward force on your hand if (and only if)
you have attached a nozzle. Let's estimate this force. Assume that the x-axis is aligned with the end
of the hose, and points in the direction of the water flow.
(a) Assume that the hose delivers water at the rate of 11 = 1000 cm
that the hose has a cross section of 1 cm2. Estimate the speed of the water in the hose.
(b) Use your result from part (a) to estimate the impulse [Apæ]enter transferred every second to the
nozzle by the water entering the nozzle (one liter of water has a mass of one kg).
(c) The nozzle forces the water to leave the nozzle through an opening that has a cross section smaller
than that of the hose. Let's assume that the nozzle's cross section is 0.5 cm 2. Estimate the speed at
3
per second to the nozzle, and
which the water leaves the nozzle.
(d) Estimate the impulse [Apä]leave transferred every second to the nozzle by the water leaving the
nozzle.
(e) Calculate the net force exerted on the nozzle by the water entering and leaving it.

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