Help finals tomorrow

  • Thread starter iRaid
  • Start date
  • #1
iRaid
559
8

Homework Statement


a1qqh1.png

PART B

Homework Equations


[tex]P = \rho gh[/tex]


The Attempt at a Solution


Well I tried doing 412 = (1025)(9.8)h.. Divide by 10045 (9.8 x 1025). And ended up getting .041..
I found out that I need to use 412 x 105 for the pressure which I have no idea why.

Any help?

Also, the answer is 4100m
 

Answers and Replies

  • #2
berkeman
Mentor
62,846
13,722

Homework Statement


a1qqh1.png

PART B

Homework Equations


[tex]P = \rho gh[/tex]


The Attempt at a Solution


Well I tried doing 412 = (1025)(9.8)h.. Divide by 10045 (9.8 x 1025). And ended up getting .041..
I found out that I need to use 412 x 105 for the pressure which I have no idea why.

Any help?

Also, the answer is 4100m

You are mixing your units. "Atmospheres" is not an mks unit. You should write units in your equations as you go, to make sure that they are consistent (LSH units = RHS units, and the units of any quantities you are adding are the same).
 
  • #3
rock.freak667
Homework Helper
6,223
31
In your equation P=ρgh, P is measured in Pascals (Pa)
 
  • #4
iRaid
559
8
Oh right thanks
 

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