A 3-m-tall glass tube is placed on the moon and filled with liquid mercury. Part

Question

A 3-m-tall glass tube is placed on the moon and filled with liquid mercury.

Part A

What is the gauge pressure at the bottom of the tube?

Express your answer in pascals to one significant figure.

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Part B

What is the absolute pressure at the bottom of the tube?

Express your answer in pascals to one significant figure.

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***** IT IS TELLING ME 66504 Pa is very close but could be a rounding error so that is not the correct answer and it is also telling me 66903 Pa is also not the answer.

Explanation / Answer

Here at moon

acceleration due to gravity , g = 9.8/6 = 1.63 m/s^2

density of mercury , p = 13400 Kg/m^3

part A)

gauge pressure = p * g * h

gauge pressure = 13400 * 1.63 * 3

gauge pressure = 65660 Pa

rounding to one significant figure

gauge pressure = 70000 Pa

part B)

as there is no atmosphere on moon

absolute pressure = gauge pressure

absolute pressure = 70000 Pa

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