3. Atmospheric pressure is often given in units of millimeters of mercury. This refers to the height of a mercury column above the mercury's surface at the base of a barometer. The force exerted by the atmosphere on the surface of the mercury in the reservoir equals the weight of the mercury in the column. If the mercury column extends 760 mm above the mercury's surface in the reservoir, what is the atmosphere's pressure over the mercury? Use 13.6*10^ 3 kg/m^ 3 for the density of mercury

Question

Mollie Rowe

Physics

16 November, 02:55

3. Atmospheric pressure is often given in units of millimeters of mercury. This refers to the height of a mercury column above the mercury's surface at the base of a barometer. The force exerted by the atmosphere on the surface of the mercury in the reservoir equals the weight of the mercury in the column. If the mercury column extends 760 mm above the mercury's surface in the reservoir, what is the atmosphere's pressure over the mercury? Use 13.6*10^ 3 kg/m^ 3 for the density of mercury

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Answers (1)

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Sammy Dean · Answer 1

101397.16 pa

Explanation:

The pressure recorded will be equal to pgh

Where p = density of mercury = 13.6x10^3 kg/m^ 3

g = acceleration due to gravity 9.81 m/s^2

h = height of mercury in the column = 760 mm = 760x10^-3 m

Pressure = 13.6x10^3 x 9.81 x 760x10^-3 = 101397.16 pa