A mercury barometer measures the pressure on the surface of the Earth. What woul
ID: 1582206 • Letter: A
Question
A mercury barometer measures the pressure on the surface of the Earth. What would determine how it would work and its reading on another planet, such as Mars?
Pick those that apply.
The extent of the planet's atmosphere above its surface
The temperature of the atmosphere.
The density of the planet's atmosphere
The acceleration of gravity on the planet
a)The extent of the planet's atmosphere above its surface
b)The temperature of the atmosphere.
c)The density of the planet's atmosphere
d)The acceleration of gravity on the planet
Explanation / Answer
d) The acceleration of gravity on the planet
Because,
from the reading of the barometer, Pressure P = rho*g*h
here rho is the density of the mercury which is a constant.
g is the acceleration due to gravity on the planet.
h is the height raised by the mercury in the vertical column.
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