I tried using lamba = h/p as follows:
(6.626 * 10^-34 J *s) / (8 m.s * 0.6 kg) = 1.38041667*10^−34
and then using the small angle approximation sin(alpha) = lamba/d as follows:
(1.38041667*10^−34)/(0.6m) = 2.30069444 * 10^−34
then converting to radians with the following:
(2.30069444 *...