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In a 30.0-s interval, 540 hailstones strike a glass window of area 0.600 m2 at an...

In a 30.0-s interval, 540 hailstones strike a glass window of area 0.600 m2 at an angle of 45.0° to the window surface. Each hailstone has a mass of 5.00 g and a speed of 8.20 m/s. Assume the collisions are elastic. (a) Find the average force on the window. (b) Find the average pressure on the window during this interval (due to the hailstones only).

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