Determine the barometer reading at the level of a tower with a height of 540 m, if on the surface of the earth p = 100641Pa.

Let’s start by recording given:

p1 = 100 641 Pa;

h = 540 m.

For every ten meters, the pressure changes by 111 Pa (10 meters – 111 Pa).

To find:

p2 -?

Solution:

We know the height of the tower, so we divide the height of the tower by 10 and multiply it by 111 Pa and thus find the pressure at an altitude of 540 meters.

k = h: 10 m * 111 Pa = 540 m: 10 m * 111 Pa = 54 * 111 = 5994 Pa.

We found the pressure at the altitude, it remains to calculate the barometer readings.

To do this, we find the difference between the pressure indicators on the surface of the earth and at the height:

p2 = p1 – k = 100 641 Pa – 5 994 Pa = 94 647 Pa = 94.647 kPa.

Answer: p2 = 94, 647 kPa