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One of the contests at the school carnival is to throw a spear at an underwater target lying flat on the bottom of a pool. The water is 1.2 m deep. You're standing on a small stool that places your eyes 2.8 m above the bottom of the pool. As you look at the target, your gaze is 35 degrees below horizontal. Your raised arm brings the spear point to the level of your eyes as you throw it, and over this short distance you can assume that the spear travels in a straight line rather than a parabolic trajectory.
At what angle below horizontal should you throw the spear in order to hit the target?
A dipole is located at the origin, and is composed of charged particles with charge +e and -e, Calculate the force on a proton due to this dipole at a location m.
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Explain the valve minor loss coefficient and how you would go about determining K.
A 100000 liter water tower is to be drained. The pump can pull water out of the tank through a circular opening in the tank at a velocity of 10 meters per second
Is it safe to use zero for the initial velocity in equations?
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