Question

pressure is determined as force per unit area of the surface . The S.I unit of pressure , pascal is as shown below : 1Pa=1N/m^2. if mass of air at sea level is 1034g/cm^2 , calculate the pressure in pascal.​

Answer 1

Pressure is the force (i.e. weigh) acting per unit area.

P= F/A = 1034g×9.8ms-2/cm2

= 1034g×9.8ms-2/cm2 × 1kg/1000g × 100cm/1m × 100cm/1m = 1.01332×105 N

Now,

1Pa = 1N m-2

∴ 1.01332×105 N×m-2 = 1.01332×105 Pa

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