The pressure due to atmosphere is 1.0138 * 10 Pa.Find the force exerted by the atmosphere on the top surface of a table 2.0 m long and 1.0 m wide.

Well if you are talking about the earth's atmosphere then the standard value for earth's atmospheric pressure is 101.325 kPa or 1.01325 × 105 Pa

So 

F = P × Area of the table 

and Area of the table  = lb = 2 m2

Now by substituting the values we can get the desired answer.

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