L a \ n \ A proton is located at (0, O, 2.5 x 10'9) m, and an alpha particle (consisting oftwo protons and two neutrons) is located at (4.5 x 10'9, O, 4.5 x 10") m. (Express your answers in vector form.) (a) Calculate the force the proton exerts on the alpha particle. N X (b) Calculate the force the alpha particle exerts on the proton. N Additional Materials ('1