Physics

Problem

A vacuum pump lowers the pressure inside a chamber by

40\,\text{cm}

of mercury below atmospheric pressure. Atmospheric pressure is

760\,\text{mm Hg}

. Taking

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

and

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

, determine the absolute pressure inside the chamber (in pascals). a)

9.6\times10^{4}\,\text{Pa}

3.6\times10^{4}\,\text{Pa}

4.8\times10^{4}\,\text{Pa}

5.3\times10^{4}\,\text{Pa}