1. The problem statement, all variables and given/known data Electrons with energies of 0.201 eV are incident on a barrier 2.386 eV high and 0.383 nm wide. Find the probability for these electrons to penetrate the barrier. 2. Relevant equations Note: h = h-bar k=Sqrt[2*m (V - E)]/h T = (1 + (V^2 (Sinh[k*L]^2))/(4*R (V - R)))^-1 where T= transmission probability V= potential of the barrier E= energy of the electrons m- mass of electrons = 9.11*10^-31 h= (4.14*10^-15)/(2*pi) L=.383*10^-9 m 3. The attempt at a solution I've been using the equations for k and T found both in my textbook and on wikipedia and plugging them into mathematica, but they're both giving me wrong answers. Can anyone see what's wrong?