P3.21 For the two-port tank in Fig. E3.5, let the dimensionsremain the same, but assume V₂ = 3 ft/s and that V₁ isunknown. If the water surface is rising at a rate of 1 in/s,(a) determine the average velocity at section 1. (b) Is theflow at section 1 in or out? E3.5Tank area A,Fixed CSPaPwEXAMPLE 3.5The tank in Fig. E3.5 is being filled with water by two one-dimensional inlets. Air is trappedat the top of the tank. The water height is h. (a) Find an expression for the change in waterheight dhldt. (b) Compute dh/dt if D₁ = 1 in, D₂ = 3 in, V₁ = 3 ft/s, V₂ = 2 ft/s, andA, = 2 ft², assuming water at 20°C.

Calculated the average velocity in section 1. And determined the flow direction in section 1.

P3.21 For the two-port tank in Fig. E3.5, let the dimensions remain the same, but assume V₂ = 3 ft/s and that V₁ is unknown. If the water surface is rising at a rate of 1 in/s, (a) determine the average velocity at section 1. (b) Is the flow at section 1 in or out?

P3.21 For the two-port tank in Fig. E3.5, let the dimensions remain the same, but assume V₂ = 3 ft/s and that V₁ is unknown. If the water surface is rising at a rate of 1 in/s, (a) determine the average velocity at section 1. (b) Is the flow at section 1 in or out?

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

P3.21 For the two-port tank in Fig. E3.5, let the dimensions
remain the same, but assume V₂ = 3 ft/s and that V₁ is
unknown. If the water surface is rising at a rate of 1 in/s,
(a) determine the average velocity at section 1. (b) Is the
flow at section 1 in or out?

E3.5
Tank area A,
Fixed CS
Pa
Pw
EXAMPLE 3.5
The tank in Fig. E3.5 is being filled with water by two one-dimensional inlets. Air is trapped
at the top of the tank. The water height is h. (a) Find an expression for the change in water
height dhldt. (b) Compute dh/dt if D₁ = 1 in, D₂ = 3 in, V₁ = 3 ft/s, V₂ = 2 ft/s, and
A, = 2 ft², assuming water at 20°C.

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