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In a mercury barometer, the column stands at about what height at sea level?
A76 cm
B10.3 m
C13.6 cm
D1 m
Answer & Solution
Correct answer: A. 76 cm
A 76 cm column of mercury balances one atmosphere, since rho g h = 13600 x 9.8 x 0.76 is about 1.01 x 10^5 Pa.
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