the distance between two charges q a and q b is r and the force between them is F. What is the force between them if the distance between them is doubled?

Akg a of 55 m at an of 11 ? . if is at 98 km/h,be ?

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 ?

Aman throws a football straight into the air. as it rises, it slows down. which type of energy is the football gaining?