Hello. Our instructor solved this question and subtracted the product of water's height and specific weight from the P1 pressure, as well as oil's. He didn't factor air pressure into the equation. What is the reason why we do not use open air pressure to solve the problem? A 4.27-m diameter cylindrical tank, open to atmosphere, is filled to a depth of 4.88 m withseawater. The pressure at the bottom of the tank is 117.21 kPa (gage) when atmosphericpressure is 775 mm Hg. What is the depth of a layer of SAE 30 oil floating on the seawater?oilwater(not to scale)a. 6.99 mO b. 4.57 mO c. 5.08 mO d. 3.12 mO e. 7.62 m

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A 4.27-m diameter cylindrical tank, open to atmosphere, is filled to a depth of 4.88 m with seawater. The pressure at the bottom of the tank is 117.21 kPa (gage) when atmospheric pressure is 775 mm Hg. What is the depth of a layer of SAE 30 oil floating on the seawater? water

A 4.27-m diameter cylindrical tank, open to atmosphere, is filled to a depth of 4.88 m with seawater. The pressure at the bottom of the tank is 117.21 kPa (gage) when atmospheric pressure is 775 mm Hg. What is the depth of a layer of SAE 30 oil floating on the seawater? water

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter1: Heat, Temperature, And Pressure

Section: Chapter Questions

Problem 14RQ: Atmospheric pressure at sea level under standard conditions is ______inches of mercury (Hg) or_____...

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Question

Hello. Our instructor solved this question and subtracted the product of water's height and specific weight from the P1 pressure, as well as oil's. He didn't factor air pressure into the equation. What is the reason why we do not use open air pressure to solve the problem?

A 4.27-m diameter cylindrical tank, open to atmosphere, is filled to a depth of 4.88 m with
seawater. The pressure at the bottom of the tank is 117.21 kPa (gage) when atmospheric
pressure is 775 mm Hg. What is the depth of a layer of SAE 30 oil floating on the seawater?
oil
water
(not to scale)
a. 6.99 m
O b. 4.57 m
O c. 5.08 m
O d. 3.12 m
O e. 7.62 m

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