If a person perceives that he has some control over his environment, he most likely will handle stress:

Un jugador de beisbol batea un foul recto en el aire.la pelota deja el bate con una rapidez de 120 km/h. en ausencia de resistencia del aire. ? cual sera la rapidez de la pelota cuando la atrape el catcher

Convection currents are caused by differences in what two things?

The electric field inside a cell membrane is 8.0mn/c. what's the force on a singly charged ion in this field?