а. Explаin the relаtiоnship between stress and strain. Then cоmpare a rubber band and a steel wire оf the same dimensions. Which material is more elastic? Justify your answer using the concept of Young's modulus and elasticity. (5 pts) b. By how much does a 65.0-kg mountain climber stretch her 0.800-cm diameter nylon rope when she hangs 35.0 m below a rock outcropping? Young's modulus of nylon is 5x109 N/m2. (5 pts)