An rectangular above-ground swimming pool is 9 m long and 4 m wide. The pool wall has a constant height of 3 m above the ground. Take atmospheric pressure to be 1 atm = 105 Pa and g = 10 m/s2.
(a) Calculate the weight of the air that fills the pool when the pool is empty. (Take the density of air to be 2.17 kg/m3.)
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note, it's supposed to be 1 atm=10^5 Pa
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