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18 April, 07:36

A balloon is a sphere with a radius of 5.0 m. the force of the air against the wall of loan is 45 N. what is the air pressure inside the balloon? (Surface area = 12.56 x radius 2, 1 Pa = N/m^2)

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  1. 18 April, 08:28
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    Radius of balloon = 5.0m surface area = 12.56 x (5.0m) ^2 = 314 m^2 Air pressure inside balloon=force/surface area=45 N / 314 m^2 = 0.14 N/m^2 1 Pa = 1 N/m2 Answer is 1.4 X 10^-1 Pa
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