Two boys are standing on a bridge 10 m above a stream. one boy throws a rock horizontally with speed of 5.0 m/s at exactly the same time that the other boy drops a rock vertically. which is true? a) a rock thrown horizontally strikes the water first b) a rock dropped vertically strikes the water faster c) both rocks strike the water at the same time d) none of the above

Porque crees que el agua no podia subir mas de 10 m de altura con ese tipo de bomba

The pressure proportional to the area a- inversely b- directly c- increase d-decrease

Ametal ring 4.20 cm in diameter is placed between the north and south poles of large magnets with the plane of its area perpendicular to the magnetic field. these magnets produce an initial uniform field of 1.12 t between them but are gradually pulled apart, causing this field to remain uniform but decrease steadily at 0.240 t/s . (a) what is the magnitude of the electric field induced in the ring? (b) in which direction (clockwise or counterclockwise) does the current flow as viewed by someone on the south pole of the magnet?