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A stream of water strikes a stationary turbine blade horizontally,as the drawing illustrates. The incident water stream has avelocity of +18.0 m/s, while the exiting water stream has avelocity of -18.0 m/s. The mass of water per second that strikesthe blade is 42.0 kg/s. Find the magnitudeof the average force exerted on the water by the blade.

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