In 1911, Ernest Rutherford discovered the nucleus of the atom by observing the scattering of helium nuclei from gold nuclei. If a helium nucleus with a mass of 6.68
electric field equations involving k constant, charge, mass, and velocity
The Attempt at a Solution
I was told by a classmate that this should work:
d = (9e9)4(79)(1.602e-19)^2 / (6.68e-27)(1.3e7)
= 8.4e-7 meters
(where e means x10^#)
But it's wrong, and I'm not sure which equation this solution came from in the first place.