Pressure is determined as force per unit area of the surface. The SI unit of pressure, pascal is as shown below : 1 Pa = 1 Nm^(-2) . If mass of air at sea level is 1034 g cm^(-2), calculate the pressure in pascal.

Pressure is determined as force per unit area of the surface. The SI u

1.	Pressure is determined as force per unit area of the surface. The SI unit of pressure, pascal is as shown below : 1 Pa = 1 Nm^(-2) . If mass of air at sea level is 1034 g cm^(-2), calculate the pressure in pascal.
Answer» Solution :Pressure is the force (i.e., weight) PER unit area. Weight of air at SEA level = m.g = `1.034 xx 9.8 =10.1332 KG ms^(-2), (therefore m =1034 g = 1.034 kg, g = 9.8 ms^(-2)`) `therefore` Pressure `=("Weight")/("area") = (10.1332 kg ms^(-2))/(10^(-4) m^(2)) = 101332 kg m^(-1) s^(-2)` `therefore` 1 Pascal `=1 Nm^(-2) =(1N)/m^(2) = (1 kg ms^(-2))/m^(2) = 1 kg m^(-1) s^(-2)` `therefore` Pressure of air `=101332 kg m^(-1)s^(-2) = 101332 Pa = 1.01332 xx 10^(5)` Pa