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प्रश्न
What is the pressure exerted by 75 cm vertical column of mercury of density 13600 kgm−3 in SI units?
[Take g = 9.8 ms−2].
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उत्तर
Vertical length of mercury column = h = 75 cm = 0.75 m
Density of mercury = p = 13600 kg m−3
Acceleration due to gravity = g = 9.8 ms−2
Pressure = P = ?
p = hpg
P = 0.75 × 13600 × 9.8
P = 99960 Pa
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