Random walks and polymer folding. (3+3=6pts) Imagine a linear polymer chain composed of N covalently linked linear segments. Each segment has length and is free to move randomly in a 2D space. Yet, each segment remains covalently attached to the rest of the polymer chain, while moving around. [TIP: Relate the polymer behavior to the random-walk conceptual framework seen in class.] 1. Write down expressions for the root-mean-square average end-to-end distance (