(b) What is the potential difference V(r) - V(0) for r < a (i. e., where r is inside the insulating sphere, and V(0) is the potential at the origin)

Which type of reaction is shown in this energy diagram? energy products activation energy reactants time o a. endothermic, because energy is released to the surroundings o b. exothermic, because energy is absorbed from the surroundings o c. exothermic, because energy is released to the surroundings o d. endothermic, because energy is absorbed from the surroundings