Suppose the proton magnetic moment were to be interpreted as due to the rotational motion of a positive spherical uniform charge distribution of radius R spinning about its axis with angular speed w. (a) Show that μ=ewR2/5 by integrating over the charge distribution. (b) Using the classical relationship between angular momentum and rotational speed, show that wR2 = s/0.4m. (c) Finally, obtain μ = (e/2m)s.