Physics Magnetism,Magnetic Effects Of Current Level: High School

Force on a moving charge

a)A particle has charge of charge of +2e and mass of 2.54 x 10-25 kg , fixed at origin , what is the electric field ?

b) Proton has +e charge released 3.1 x 10-9 m away . Mass is 1.67 x 10-27 kg . What is the magnitude of the force on the proton ?