Convert PSI to Pascals & Compare to Atmospheres

  • Context: High School 
  • Thread starter Thread starter Big Drop
  • Start date Start date
Click For Summary

Discussion Overview

The discussion revolves around converting pressure measurements from psi to pascals and comparing these values to atmospheric pressure. Participants explore the relationships between different pressure units and how to effectively communicate these conversions.

Discussion Character

  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant seeks to convert various psi values to pascals and compare them to atmospheric pressure for better understanding.
  • Another participant explains the relationship between psi, pascals, and atmospheres, noting that pressure is defined as force per area.
  • A different participant provides specific conversion factors, stating that 14.7 psi equals 1 atmosphere and 1 psi is approximately 6.894757 kPa.
  • One participant proposes a sentence to describe the pressure comparison but expresses uncertainty about its clarity and correctness.
  • Another participant asserts that the pressure is 13 times greater than atmospheric pressure without further elaboration.

Areas of Agreement / Disagreement

Participants generally agree on the conversion factors between psi, pascals, and atmospheres. However, there is some uncertainty regarding the clarity and accuracy of the proposed sentence for describing the pressure comparison.

Contextual Notes

Some participants express caution about the phrasing used to compare pressures, indicating a need for clearer communication. The discussion does not resolve the best way to articulate the comparison of pressures.

Who May Find This Useful

This discussion may be useful for individuals interested in understanding pressure unit conversions, particularly in engineering or scientific contexts where pressure comparisons are relevant.

Big Drop
Messages
5
Reaction score
0
Pascals - Atmospheres

I have a various numbers of psi's...and was told it would be interesting to convert it to pascals, and then compare the pascals and our atmosphere.

As in, 200 psi is 1.38e10^6 Pa. How could i show how much force that is. Or even say, its 'x' number of atmospheres. Just so i can get the pressure into perspective for readers...Thanks
 
Last edited:
Science news on Phys.org
Pressure is just force / area, hence PSI is pounds / square inch, Pascal is 1N/m^2
An atmosphere is roughly 15psi or 100KPa.
To convert PSI to Pa you just need to know how many pounds in a Newton and how many sq inches in a square metre.
 
Ahhh yes. Must have missed these figures!

14.7psi = 1 atmosphere = 101,325 Pa

And its 6.894 757 kPa to 1 psi.

So if i were to write a sentance would something like this be correct?

"The pressure at combustion is 200psi. To show how high this pressure is, i converted it to Pascals, which is 1.38e10^6 Pa, and then converted Pa to atmospheres which is 13.6. This means that the pressure in the engine is over 13 times as strong as our atmosphere."

By the way, i know i don't have to convert to Pa, then to atm, but as i would show working, it would tick a box.

I am a bit wary of my last sentance, comparing the two. It doesn't sound good to me...i was trying to think of a better way to describe it really.Thank you very much for all your help!
 
Pressure is 13 times greater than the atmosphere.
 
thanks for the help! much appreciated.
 

Similar threads

  • · Replies 15 ·
Replies
15
Views
6K
  • · Replies 69 ·
3
Replies
69
Views
9K
Replies
4
Views
794
  • · Replies 3 ·
Replies
3
Views
3K
  • · Replies 5 ·
Replies
5
Views
5K
Replies
3
Views
3K
  • · Replies 9 ·
Replies
9
Views
4K
  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 15 ·
Replies
15
Views
2K
  • · Replies 45 ·
2
Replies
45
Views
7K