Suppose you exert a 25-n force to lift a ball 0.4 m in 2 s. how much work is done?

Apositive point charge q is fixed on a very large horizontal frictionless tabletop. a second positive point charge q is released from rest near the stationary charge and is free to move. which statement best describes the motion of q after it is released? assume q stays on the table

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?

An electron is traveling with initial kinetic energy k in a uniform electric field. the electron comes to rest momentarily after traveling a distance d. (a) what is the magnitude of the electric field