Thursday
September 18, 2014

Homework Help: Barometric Pressure

Posted by mike on Tuesday, August 29, 2006 at 10:49am.

Furthur to my recent question and thank you Bob.

Had the 32 feet being 33 feet I would have considered this close enough to 10m.

However I now understand there are many answers to the question of the decrease in barometric pressure with height all probably correct. Taking the mean barometric pressure at sea level and at the top of Everest I concluded that a decrease in the order of 85mb per Km was about right. Although I now realise it will not be correct to divide the difference in mb by the ht in Km to arrive at a decrease that will be correct at all altitudes under all circumstances.

The figure I found on the internet of 100 mb per Km may well be correct from sea level up to 1Km in ht but for a different altitude say between 9 Km and 10 Km a figure of 75 mb per Km might be more accurate. (or is it the other way round)

Anyone ant ideas?

Thank you,

Mike.


Since this is not my area of expertise, I searched Google under the key words "'barometric pressure' altitude" to get these possible sources:

http://www.sablesystems.com/baro-altitude.html
http://en.wikipedia.org/wiki/Atmospheric_pressure
http://www.usatoday.com/weather/wbarocx.htm
http://hyperphysics.phy-astr.gsu.edu/hbase/kinetic/barfor.html
http://www.answers.com/topic/atmospheric-pressure

I hope this helps. Thanks for asking.


The problem you are faceing is this:
Trying to reduce a complicated model of reality to a rule of thumb always leads to exceptions. No matter what rule you choose, (10km per 75mb), you will find it is only a guide.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Barometric Pressure - I have been studying the reduction in barometric pressure ...
physics - What is the pressure due to a man weighing 80 kg standing on his feet...
math - the dimensions of a rectangular prism are height 7 feet, width 4 feet and...
physics - You are standing 7 feet from one speaker and 13 feet from another. ...
math - a plumber has 12 1/2 feet of plastic pipe he uses 3 2/8 feet for the sink...
Chemistry - I have to chane the barometric pressure in my area to ATM. We have ...
math - Walterwants to replace some fence on his farm the wooden rail fence cost ...
Math - Sidney told sam that that he would love a lot that is a trapeziod shape ...
math - Tania is in charge of designing a school pennant for spirit week. She ...
Science/math - If Greenland ice sheet melted, approximately how much would the ...

Search
Members