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Question 13 of 14 < > -75 : View Policies Current Attempt in Progress Suppose a beam of 5.10 eV protons strikes a potential energy barrier of height 6.60 eV and thickness 0.720 nm, at a rate equivalent to a current of 860 A. (a) How many years would you have to wait (on average) for one proton to be transmitted through the barrier? (b) How long would you have to wait if the beam consisted of electrons rather than protons? (a) Number Units (b) Number Units eTextbook and Media GO Tutorial Save for Later Attempts: 0 of 5 used Submit Answer