Anybody know the acceleration of the box

It looks like the diagram is telling you that there is a net force of 8 N + 4 N = 12 N pointed to the right. By Newton's second law, the magnitude of the net force F is equal to the mass m times the acceleration a :

F = m a

12 N = (4 kg) a

a = (12 N) / (4 kg)

a = 3 m/s²

it will be pushed away from the source of the electric field. a negative charge in a cloud induces a positive charge in the ground below the cloud.

explanation:

a is the best answer your welcome