please answer 1-6 and 9 on seperate sheet with explanations !!

" A proton traveling horizontally due east enters a region that contains both a uniform magnetic field and a uniform electric field. (We are ignoring the earth's magnetic field and assuming that the uniform magnetic field is provided by a strong magnet.) The electric field lines point horizontally due north. It is observed that the proton continues to travel in a straight line toward the east. a) What direction is the electric force on the proton? Explain. b) What direction is the magnetic force on the proton? Explain.