Question on conversions when figuring out the pressure of a fluid

In summary, the formula for calculating pressure of a fluid is P = F/A, where P is pressure, F is force, and A is area. To convert between different units when calculating pressure of a fluid, you can use conversion factors. Pressure of a fluid can be negative, usually occurring when the fluid is under tension. The depth of a fluid has a direct impact on its pressure, with higher depths resulting in higher pressure. Absolute pressure is the total pressure exerted by a fluid, while gauge pressure only measures the pressure above atmospheric pressure.
  • #1
avolaster
13
0

Homework Statement



the problem has height in cm, and density in g/cm^3. do i have to convert the gravity into cm/sec^2?

see below:

Homework Equations


pressure=(height in cm)(density in g/cm^3)(gravity in m or in cm?)


The Attempt at a Solution

 
Physics news on Phys.org
  • #2
You'd need to put your gravity in cm/s^2, but your pressure would be in N/cm^2 and no Pascals.

if you wanted it in pascals you would have to convert height to m and density to kg/m^3 with gravity in m/s^2.
 

1. What is the formula for calculating pressure of a fluid?

The formula for calculating pressure of a fluid is P = F/A, where P is pressure, F is force, and A is area.

2. How do I convert between different units when calculating pressure of a fluid?

To convert between different units when calculating pressure of a fluid, you can use conversion factors. For example, to convert from pounds per square inch (psi) to kilopascals (kPa), you would multiply the psi value by 6.894757 and then divide by 1.00 to get the equivalent value in kPa.

3. Can pressure of a fluid be negative?

Yes, pressure of a fluid can be negative. This usually occurs when the fluid is under tension, such as in a vacuum or when a fluid is being pulled apart.

4. How does the depth of a fluid affect its pressure?

The depth of a fluid has a direct impact on its pressure. As depth increases, the weight of the fluid above also increases, resulting in higher pressure. This relationship is described by the equation P = ρgh, where P is pressure, ρ is the density of the fluid, g is the acceleration due to gravity, and h is the depth of the fluid.

5. What is the difference between absolute pressure and gauge pressure?

Absolute pressure is the total pressure exerted by a fluid, including atmospheric pressure. Gauge pressure, on the other hand, only measures the pressure above atmospheric pressure. This means that gauge pressure can be either positive or negative, while absolute pressure is always positive.

Similar threads

  • Introductory Physics Homework Help
Replies
10
Views
814
  • Introductory Physics Homework Help
Replies
5
Views
941
  • Introductory Physics Homework Help
Replies
23
Views
2K
  • Introductory Physics Homework Help
Replies
8
Views
722
  • Introductory Physics Homework Help
Replies
1
Views
1K
  • Introductory Physics Homework Help
Replies
1
Views
707
  • Introductory Physics Homework Help
Replies
3
Views
2K
  • Introductory Physics Homework Help
Replies
13
Views
2K
Replies
2
Views
773
  • Introductory Physics Homework Help
Replies
6
Views
2K
Back
Top