Consider an electron initially moving in the positive x-direction along the negative x-axis with an energy of 1.0 ev. at the origin the electron encounters a square barrier; the potential energy u (x) changes abruptly, from u (x) = 0 for x < 0, to u (x) = v for 0 < x < a, and back to u (x) = 0 for x > a, where the barrier width a = 1.0 nm . what is the transmittance if v = 1.1 ev?