A nonrelativistic electron is confined to a length of 28.7 fm on the x-axis. What is the kinetic energy of the electron if its speed is equal to the minimum uncertainty possible in its speed? h = 6.626times 10-34 J . s, mel = 9.11 times 10-31 kg, 1 eV = 1.60 times 10-19 J) 0.015 eV 0.15 eV 1.5 eV 15 eV 150 eV