Answer to Question #170610 in Mechanics | Relativity for Cliff

Question

a mercury barometer reads the atmospheric pressure on top of a mountain as 74.5cmHg and the base of the mountain it reads 76cmHg. what is the height of the mountain

Answer 1

It is known, that for small altitudes the atmospheric pressure decreases by 1 mmHG for each 12 m of raising. So, the height of the mountain is:

$h=12(p_b-p_t),$

where p_t - the atmospheric pressure on top of a mountain in mmHg;

p_b - the atmospheric pressure on base of a mountain in mmHg.

$h=12(760-745)=180\space m.$

Answer: 180 m.