And I had multiple posts on it, guilty as charged. I will never get that time back in my life.
Just for you....
You have an S-shaped lawn sprinkler-an S-shaped pipe on a pivot-and the water squirts out at right angles to the axis and makes it spin in a certain direction. Everybody knows which way it goes around; it backs away from the outgoing water. Now the question is this: If you had a lake, or swimming pool-a big supply of water-and you put the sprinkler completely under water, and sucked water in, instead of squirting it out, which way would it turn? Would it turn the same way as it does when you squirt water out into the air, or would it turn the other way?
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