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A mercury barometer reads 760mmHg at sealevel and 700mmHg at the top of a mountain. If the density of mercury is 13,600kg/m3 and average density of air is 1.30kg/m3, calculate the height of the mountain.

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Difference in pressure 760 – 700 = 60mm
60/1000 x 13600 x 10 = h x 1.3 x 10
h=8160/(1.3 ×10)
h=627.69 m

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