This is an ecology question if anyone is able to help me out the picture is up top I would really appreciate it thank you!! I will give you the points if you are correct

A2-kg bowling ball is 2.5 meters off the ground on a post when it falls. just before it reaches the ground, it is traveling 7 m/s. assuming that there is no air resistance, which statement is true?

Two point charges are on the y axis. a 3.90-µc charge is located at y = 1.25 cm, and a -2.4-µc charge is located at y = −1.80 cm. (a) find the total electric potential at the origin. v (b) find the total electric potential at the point whose coordinates are (1.50 cm, 0). v

An isotope undergoes radioactive decay by emitting radiation that has a –1 charge. what other characteristic does the radiation have?