Positive charge Q is distributed uniformly around a very thin conducting ring of radius a, as in Fig. 21.23. You measure the electric field E at points on the ring axis, at a distance x from the center of the ring, over a wide range of values of x. (a) Your results for the larger values of x are plotted in Fig. P21.94a as Ex2 versus x. Explain why the quantity Ex2 approaches a constant value as x increases. Use Fig. P21.94a to calculate the net charge Q on the ring. (b) Your results for smaller values of x are plotted in Fig. P21.94b as E>x versus x. Explain why E>x approaches a constant value as x approaches zero. Use Fig. P21.94b to calculate a.

Callback Script If someone else answers the phone: hi! Is ________ available This is _______ from Mainstage. If the child answers the phone/ when they receive the phone: ______ Hi! This is ______ from Mainstage. I’m calling on behalf of the Summer Stage directors to offer you a callback. Congratulations! -The callbacks are Saturday morning (2 days from now) at 11 am in Academy Hall. (27 South Black Horse Pike if they ask) -Will you be able to attend -Great! You can plan on callbacks lasting until about 4 or so [[say this in a tentative voice. They will hopefully be done before 4 but we don’t know how long the process will take for each person before we’ve seen everything we need to see from them, so plan on it being at least 4 with the hope that th