Question

$1$Pa $=1N{m}^{-2}$
If mass of air at sea level is $1034$ g $c{m}^{-2}$, calculate the pressure in pascal.

• A. $101\times {10}^{5}Pa$
• B. $1Pa$
• C. $1.0133\times {10}^{5}Pa$
• D. $10133\times {10}^{5}Pa$

Answer 1

The correct option is C $1.0133\times {10}^{5}Pa$

Given that:

Mass =$1034g=1.034kg$

Force=$m\times g=1.034\times 9.81N$

$10.143N$

Area=$1c{m}^2=1\times {10}^{-4}{m}^2$

Hence the pressure =$\frac{force}{Area}$

=$\frac{10.134}{1\times {10}^{-4}}N/m^2$

$=1.013\times {10}^{5}Pa$

Hence, the correct option is $C$