An alpha particle (q = +79e, m = 6.68 x10^-27kg) is fired from a distance of 10 cm at a gold nucleus (q = +79e). (1 e = 1.6 x 10^-19C; 1 nm = 1 x 10^-9m)
a.) what is the intial speed of the alpha particle if the distance of closest aprroach is 100nm?
b.) what is the change in electric potential for the alpha partical?
c.) what is the force on the alpha particle due to the gold nucleus at the distance of closest approach?