Posted by **Deana** on Wednesday, August 10, 2011 at 3:29pm.

A wind with speed 45 m/s blows across a roof 20 m long and 12 m wide. The pressure inside the room is 1 atm. What is the net force on this roof due to the pressure difference inside and outside the roof? (The density of air is equal to 1.3 kg/m3.)

Question 1 options:

A) 2.4 x107 N

B) 6.3 x 105 N

C) 3.2 x 105 N

D) 7.0 x 103 N

E)

3.2 x 108 N

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