A 100g steel ball falls from a height of 1.8m on to a metal plate and rebounds to a height of 1.25m, find The p. e of the ball before the (fall g=10m/s2)
Its k. e as it hits the plate
Its velocity on hitting the plate
Its k. e as it leaves the plate on the rebound
Its velocity if rebound

If an object with an initial temperature of 300 k increases its temperature by 1°c every minute, by how many degrees fahrenheit will its temperature have increased in 10 minutes? (a) 6°f (b) 10°f (c) 18°f (d) 30°f

(a) calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 10.0 g. silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) imagine adding electrons to the pin until the negative charge has the very large value 1.00 mc. how many electrons are added for every 109 electrons already present

Based on this activity, is kinetic energy always transformed into potential energy?