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A vertical underwater window in a resevoir has the shape of a parabola y = x? whose vertex is 1 meters below the water surfac
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obc *173s = 243 Im 8=x2 A S-dag j - Soydan od J C (-xa) do = 3 [x-. | 0 - 3 - 6 & F = pressure at J x Area of plate - 89 x 27

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