During the developing stage of a thunderstorm, air moves

upwards

downwards

towards poles

towards equator

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?

If a simple machine reduces the strength of a force, what must be increased?

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?