In FIGURE Q14.5, is pA larger than, smaller than, or equal to pB? Explain

Short Answer

Expert verified

Pressure on both points are equal. so pA = pB

Step by step solution

01

Given information

Two points A and B is shown in the diagram below.

02

Explanation

The pressure of liquid depends on the density and depth below the surface and atmospheric pressure.

P = hρg + Atmospheric pressure.

Where

P = pressure

h = depth of point from the surface or opening

ρ = density of liquid

g = gravitational acceleration

In this case both will have same height so pressure will remain same.

The floating ship will not impact the pressure on the point below. The weight of ship will be countered by buoyant force.

So pA = pB.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

An 80-cm-long, 1.0-mm-diameter steel guitar string must be tightened to a tension of 2000 N by turning the tuning screws. By how much is the string stretched?

Astronauts visiting a new planet find a lake filled with an unknown liquid. They have with them a plastic cube, 6.0cmon each side, with a density of 840Kg/m3. First they weigh the cube with a spring scale, measuring a weight of 21N. Then they float the cube in the lake and find that two-thirds of the cube is submerged. At what depth in the lake will the pressure be twice the atmospheric pressure of85kPa ?

An aquarium of length L, width (front to back) W, and depth Dis filled to the top with liquid of density

a. Find an expression for the force of the liquid on the bottom of the aquarium.

b. Find an expression for the force of the liquid on the front window of the aquarium.

c. Evaluate the forces for a100cm-long, 35-cm-wide,40cmdeep aquarium filled with water.

The 1.0m-tall cylinder in FIGURE P14.61 contains air at a pressure of 1atm. A very thin, frictionless piston of negligible mass is placed at the top of the cylinder, to prevent any air from escaping, then mercury is slowly poured into the cylinder until no more can be added without the cylinder overflowing. What is the height h of the column of compressed air?

Hint: Boyle's law, which you learned in chemistry, says p1V1=p2V2 for a gas compressed at constant temperature, which we will assume to be the case.

Glycerin is poured into an open U-shaped tube until the height in both sides is 20cm. Ethyl alcohol is then poured into one arm until the height of the alcohol column is 20cm. The two liquids do not mix. What is the difference in height between the top surface of the glycerin and the top surface of the alcohol?

See all solutions

Recommended explanations on Physics Textbooks

View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free