Physics

Problem

Calculate the height of the mercury column (in cm) needed to balance an atmospheric pressure of

1.02\times10^{5}\,\text{Pa}

. Take

\rho_{Hg}=13.6\times10^{3}\,\text{kg\,m}^{-3}

and

g=9.8\,\text{m\,s}^{-2}

. a)

74.0\,\text{cm}

76.5\,\text{cm}

78.6\,\text{cm}

75.0\,\text{cm}