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Q. A 20 wood ball hangs from a 1-long wire. The highest tension the wire can withstand without breaking is 600. A 0.90 projectile travelling horizontally hits and embeds itself in the wood ball. What is the largest speed this projectile can have without causing cable to break?

Q. At one point in a pipeline, the water's speed is 3 and the gauge pressure is 4.00×10^4. Determine the gauge pressure at a second point in the line 11.0 lower than the first if the pipe diameter at the second point is twice that at the first.

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