Three Blocks: Three blocks, each of mass 13 kg are on a frictionless table. A han pushes on the left most block (block A) such that the three boxes accelerate in the positive horizontal direction as shown at a rate of a = 0.7 m/s?. (a) What is the magnitude of the force on block A from the hand? (b) What is the net horizontal force on block A? (c) What is the horizontal force on block A due to block B? (d) What is the net horizontal force on block B? (e) What is the horizontal force on block B due to block C?