Question

Calculate the coulombic force (in Newtons) felt by an electron and a proton separated by a distance of 1 angstrom. An angstrom is 10−10 meters.

Answer 1

F=kq'q"/d²


charge of electron(q')= 1.6022*10^-19
charge of proton (q")= -1.6022*10^-19
Coulomb's constant (k)= 9*10^9
distance (d)=10^-10

substituting values into equation

F= (9*10^9)*(1.6022*10^-19)(-1.6022*10^-19)/(10^10)²

F= -2.31034036 × 10^-48N