Dos pelotas de básquetbol las dejan caer de dos alturas diferentes y deben caer en un mismo punto. Si la pelota 1 está a 6 M de altura y su velocidad de 15 m/s ¿con que velocidad debe empujarse la bola 2 si está a una altura de 2 m según la figura

Which of the following are guidelines to follow for obtaining accurate observations

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?

Suppose a wire with a current is pushed upward by a magnetic field. how would the wire move if the direction of the current reversed? explain your answer.