A box containing a new TV weighs 350 N. Phineas is pushing horizontally on it with a force of 150 N, but it doesn't budge. 

(a) Identify all the forces acting on the crate. Describe each as: (type of force) exerted on the crate by (object). 

(b) Identify the interaction partner of each force acting on the crate. Describe each partner as: (type of force) exerted on (object) by (object). 

(c) Draw an FBD for the crate. Are any of the interaction partners identified in (b) shown on the FBD? 

(d) What is the net force acting on the crate? Use your answer to determine the magnitude of all the forces acting on the crate. 

(e) If there are pairs of forces on the FBD that are equal in magnitude and opposite in direction, are these interaction pairs? Explain.