Sunday

November 23, 2014

November 23, 2014

Posted by **christina** on Saturday, September 5, 2009 at 8:47pm.

- college/earth science -
**drwls**, Saturday, September 5, 2009 at 10:00pm23 C = 300 K

The air density at the initial altitude (assuming sea level) is (29 g)/(24.6 *10^3 cm^3) = 1.18*10^-3 g/cm^3 = 1.18 kg/m^3

The pressure decrease after a 500 m elevation increase is

(density)*g*500 m = 5780 N/m^2

The pressure decrease factor is

(Po - 5780)/Po = 0.990, where

Po is the sea level atmospheric pressure.

Assume an adiabatic isentropic change in air temperature as the pressure decreases, with an air specific heat ratio (gamma) of g = 1.4.

(T2/T1) = (P2/P1)^[(g-1)/g]

= 0.990^(0.286) = 0.997

T2 = 299 K = 22 C

If you need a more complete explanation, see

http://farside.ph.utexas.edu/teaching/sm1/lectures/node56.html

I may have made a computing error somewhere along the way. You should verify the calculations

**Answer this Question**

**Related Questions**

Earth Science - what is the dewpoint temperature of a kilogram of air when a ...

Geog - 2- at sea level the air temperature is 80 degree F. this air reaches the ...

math - the temperature at 12 noon was 10 degree Celsius above 0.decrease at the ...

physics - A 500 g piece of silver at 150 degree Celsius is submerged in 1000 g ...

CHEMISTRY - IF THE AIR IS 20 DEGREE CELSIUS IT'S HOT, IF THE WATER IS WITH 20 ...

college algebra - 1.the temperature dropped 12 degree below a previous ...

writting a program - Speed of Sound. Sound travels through air as a result of ...

college physics - A cube of ice is taken from the freezer at -9.5 degree Celsius...

Physics - an iron of diameter 4 cm at 25 degree and a cylinder of diameter 4.002...

Chemistry - A piece of metal weighing 5.10g at a temperature of 48.6 degree ...