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  • Pressure is determined as force per unit area of the surface. The SI unit of pressure, pascal is as shown below: 1Pa = 1N m –2 If mass of air at sea level is 1034 g cm –2 , calculate the pressure in pascal.

1.13    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.

Answers (1)

best_answer

The pressure is as given is force per unit area of the surface.

 Pressure = \frac{Force}{Area}

Given to calculate the pressure exerted by the air on sea water, if the mass of air at sea level is 1034\ g\ cm^{-2}.

The force with which the air is exerting on the surface is:

= \frac{1034g\times9.8ms^{-2}}{cm^2}\times\frac{1kg}{1000g}\times\frac{100cm}{1m} = 1.01332\times10^5\ N

Now,

as 1 Pascal = 1N\ m^{-2}

Therefore, 1.01332\times10^5N\timesm^{-2} = 1.01332\times10^{5}\ Pa

Posted by

Divya Prakash Singh

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