The weight of the pendulum of an impact tester is 451b, and the length of the 27 pendulum arm is 32in. If the arm is horizontal before striking the specimen, what is the potential energy of the tester?What is the striking velocity?

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A250-n box is at rest on a frictionless horizotal floor. then a person shoves the box with a non-zero force of magnitude p. which statement best describes the relationship betweeen p and the motion of the box after it was shoved? -the box will not move when p< 250n but otherwise will accelerate at a constant rate that is directly proportional to p - the box will begin moving at a speed that is directly proportional to p, then will gradually slow to a halt -the box will move with constant velocity at a speed that is directly proportional to p -box will accelerate across the floor at a constant rate that is directly proportional to p

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt