Electrons and protons travel from the Sun to the Earth at a typical velocity of 3.93 x 10" m/s in the positive x-direction. Thousands of miles from Earth, they interact with Earth's magnetic field of magnitude 2.99 x 10 T in the positive z-direction. Find the magnitude and direction of the magnetic force on a proton. Find the magnitude and direction of the magnetic force on an electron. HINT (a) magnitude of the magnetic force on a proton (in N) (b) direction of the magnetic force on a proton O +x-direction O -x-direction O +y-direction O -y-direction 4 O +2-direction O -z-direction (c) magnitude of the magnetic force on an electron (in N) (d) direction of the magnetic force on an electron O +x-direction O -x-direction O +y-direction O -y-direction O +2-direction O -z-direction