When charges are only located OUTSIDE an enclosed Gaussian surface, the number of E field lines entering the surface may be more or less than that of the lines leaving the surface.

A. True
B. False

A. True

Explanation:

The electric flux inside and outside the Gaussian surface are only equal if the charge is enclosed.

the force on the thing and the distance the force moves the thing

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.