SELECT * FROM question_mgmt as q WHERE id=1235 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=2 AND subId=9 AND chapterId=42 and ex_no='1' AND status=1 ORDER BY CAST(question_no AS UNSIGNED)

Question:

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.

Answer:

Pressure is defined as force acting per unit area of the surface.

 

 

= 1.01332 × 105 kg m–1s–2

 

We know,

 

1 N = 1 kg ms–2  Then,

 

1 Pa = 1 Nm–2 = 1 kg m–2s–2

 

1 Pa = 1 kg m–1s–2 

 

1 Pressure = 1.01332 × 105 Pa


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