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To create electromagnetic induction, which of the following has to move? a. a wire b. a magnet c. a transformer d. either a or b

According to newtons universal law of gravitation, which would change the parh of the ball so it traces out widest curved path possible?

Alead ball is dropped into a lake from a diving board 5m above the water . it hits the water with a certain velocity and then sink with constant velocity in bottom . it reaches the bottom 5 second after it is dropped if g= 10m/s2 . find depth of the lake and average velocity of the ball ?