a small metal ball is given a negative charge, then brought near to end a of the rod (figure 1). what happens to end a of the rod when the ball approaches it closely this first time?

the bal will not change its velocity.

the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

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