A 6.0 μC positive charge is located at the origin and a 4.0 uC positive charge is located at x = 0.0 m y = 1.0 m Find the point between them where the electric field strength is zero.
x= 0 m y = 0.67 m
x = 0 m y = 0.55 m
x= 0 m y = 0.60 m
x = 0 m = 1.5 m

John throws .4 kg ball with velocity of 18 m/s. hits .2 kg bottle and bottle flies 25 m/s. how fast is ball traveling after hitting the bottle?

Arotating space station is said to create “artificial gravity”—a loosely-defined term used for an acceleration that would be crudely similar to gravity. the outer wall of the rotating space station would become a floor for the astronauts, and centripetal acceleration supplied by the floor would allow astronauts to exercise and maintain muscle and bone strength more naturally than in non-rotating space environments. if the space station is 200 m in diameter, what angular velocity would produce an “artificial gravity” of 9.80 m/s^{2} 2 at the rim?

What is the speed of an object at a given moment?