Who stated that animals as well as plants are made of cells

Amoving electron has kinetic energy k1. after a net amount of work w has been done on it, the electron is moving one-quarter as fast in the opposite direction. (a) find w in terms of k1. (b) does your answer depend on the final direction of the electron's motion?

The earth exerts a gravitational force of 500 n on amy. what is amy’s mass in kg?

Calculate the volume of this regular solid. what is the volume of the cone? round your answer to the nearest hundredth