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6 February, 02:38

The basic barometer can be used to measure the height of a building. If the barometric readings at the top and the bottom of a building are 675 and 695 mm Hg, respectively, determine the height of the building in m. Take the densities of air and mercury to be 1.18 kg/m3 and 13,600 kg/m3.

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  1. 6 February, 02:48
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    230.51 m

    Explanation:

    Pb = 695 mmHg

    Pt = 675 mmHg

    Pb - Pt = 20 mmHg

    Calculate dP:

    dP = p * g * H = (13600) * (9.81) * (20/1000) = 2668.320 Pa

    Calculate Height of building as dP is same for any medium of liquid

    dP = p*g*H = 2668.320

    H = 2668.32 / (1.18 * 9.81) = 230.51 m
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