A 5 kg box is sitting on a table. Bob's hand is pushing down on the box with a 12 N force. Find the normal force on the box. (draw this)

bob is pushing straight down on the box, which is in the direction that the force of gravity is, so the force downwards is equal to 12+mg.

Since there is no acceleration in the up/down direction, Fn=Fapplied=Fg