At the county fair, Chris throws a 0.11 kgkg baseball at a 2 kgkg wooden milk bottle, hoping to knock it off its stand and win a prize. The ball bounces straight back at 30 %% of its incoming speed, knocking the bottle straight forward.
What is the bottle's speed, as a percentage of the ball's incoming speed?

Two thin 80.0- cm rods are oriented at right angles to each other. each rod has one end at the origin of the coordinates, and one of them extends along the x- axis while the other extends along the yaxis. the rod along the x- axis carries a charge of - 15.0 μ c distributed uniformly along its length, and the other rod carries 15.0 μ c uniformly over its length. find the magnitude and direction of the net electrical force that these two rods exert on an electron located at the point (40.0 cm, 40.0 cm). (e

Can anybody me with this? ? (picture included.)

Aspring has a natural length of 8 m. if a 12-n force is required to keep it stretched to a length of 10 m, how much work w is required to stretch it from 8 m to 16 m? (round your answer to two decimal places.)