Q.

Pressure is determined as force per unit area of the surface. The unit of pressure, Pascal (1Pa=1Nm-2) if mass of air at sea level is1034 g cm-2, calculate the pressure in Pascal

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a

1.01332×105 Pa

b

1.01332×104 Pa

c

1.01332×103 Pa

d

1.01332×101 Pa

answer is A.

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Detailed Solution

P=FA=1034×9.8 ms-2 cm2×1 kg1000 g×(100)2 cm21 m2=1.01332×105 kg m-1 s-2 We know, 1N=1 kg ms-2 Then 1Pa=1Nm-2=1 kg m-1 s-2 1Pa=1 kgm-1s-21 Pressure =1.01332×105 Pa
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Pressure is determined as force per unit area of the surface. The unit of pressure, Pascal (1Pa=1Nm-2) if mass of air at sea level is1034 g cm-2, calculate the pressure in Pascal