When light strikes glass perpendicularly, about 4.0 % is reflected at each surface. Part A Find what percent of light is transmitted through a pane of window glass. Express your answer using two significant figures.

Aproton is projected toward a fixed nucleus of charge +ze with velocity vo. initially the two particles are very far apart. when the proton is a distance r from the nucleus its velocity has decreased to 1/2vo. how far from the nucleus will the proton be when its velocity has dropped to 1/4vo?

What color would an object that reflects green and blue light appear to be in white light? a. blue b. cyan c. magenta d. black

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