Some pressure concepts i don't understand

  • Thread starter Thread starter benedict9999
  • Start date Start date
  • Tags Tags
    Concepts Pressure
Click For Summary
SUMMARY

The pressure at 10 meters below the ocean surface is approximately 2.00×105 Pa. The correct statement regarding this pressure is that the weight of a column of seawater with a 1 m2 cross-section and a height of 10 m is about 2.00×105 N. This is due to the relationship between pressure, weight, and area, where pressure is defined as force per unit area. The other statements are incorrect as they either miscalculate the weight of seawater or incorrectly relate it to air density.

PREREQUISITES
  • Understanding of fluid mechanics principles
  • Knowledge of pressure calculations in fluids
  • Familiarity with the concept of density
  • Basic understanding of the relationship between force, area, and pressure
NEXT STEPS
  • Study the fundamentals of fluid statics and hydrostatic pressure
  • Learn about the calculation of pressure in different fluids, including seawater
  • Explore the concept of buoyancy and its relation to density
  • Investigate the differences in density between seawater and air at sea level
USEFUL FOR

Students studying physics, particularly those focusing on fluid mechanics, as well as educators looking for clear explanations of pressure concepts in fluids.

benedict9999
Messages
4
Reaction score
0

Homework Statement



The pressure at 10 m below the surface of the ocean is about 2.00×10^5 Pa.

Which of the following statements is true?

a. The weight of a column of seawater 1 m^2 in cross section and 10 m high is about 2.00×10^5 N.
b. The weight of a column of seawater 1 m^2 in cross section and 10 m high plus the weight of a column of air with the same cross section extending up to the top of the atmosphere is about 2.00×10^5 N.
c. The weight of 1 m^3 of seawater at 10 m below the surface of the ocean is about 2.00×10^5 N.
d. The density of seawater is about 2.00×10^5 times the density of air at sea level.

I may sound a bit greedy but if you can please explain why it is that and why others aren't right
 
Physics news on Phys.org
Welcome to PF!

Hi benedict9999! Welcome to PF! :smile:
benedict9999 said:
I may sound a bit greedy but if you can please explain why it is that and why others aren't right

No, you first! :wink:

Tell us which one you think it is, and why. :smile:

( Start with the definition of pressure )
 

Similar threads

Pressure of water coming out of a hose nozzle
  • · Replies 7 ·
Replies
7
Views
1K
What is the Pressure Change in a Pipe for Salt Water Transport?
  • · Replies 5 ·
Replies
5
Views
2K
Fluids: Concept about Fluid Pressure in a relation with Force and Area
  • · Replies 6 ·
Replies
6
Views
3K
Find the maximum safe depth of a submarine
  • · Replies 2 ·
Replies
2
Views
4K
Will a Sealed Steel Container Float in the Ocean?
  • · Replies 12 ·
Replies
12
Views
2K
Partial pressure of oxygen at a certain altitude
  • · Replies 8 ·
Replies
8
Views
4K
Will the displacement of a solid ball affect the water level?
  • · Replies 7 ·
Replies
7
Views
2K
Bernoulli's Equation, Find gauge pressure at 2nd point
  • · Replies 6 ·
Replies
6
Views
5K
What is the Relationship Between Pressure and Depth in the Ocean?
  • · Replies 2 ·
Replies
2
Views
22K
Magnetic energy density, and pressure due to magnetic force
  • · Replies 23 ·
Replies
23
Views
6K