A uniform magnetic field of magnitude 1.40 T is in the positive z direction. Find the force exerted by the field on a proton for the following proton velocities. (a) = 2.5 Mm/s i PN i + PN j + PN k (b) v = 3.7 Mm/s j pN Î + PN j + PNR (c) v = 6.8 Mm/s k PN i + pN j + PN k (d) 7 = 4.6 Mms i + 3.2 Mm/s j pNÎ + pN j + PN k

A uniform magnetic field of magnitude 1.40 T is in the positive z direction. Find the force exerted by the field on a proton for the following proton velocities. (a) = 2.5 Mm/s i PN i + PN j + PN k (b) v = 3.7 Mm/s j pN Î + PN j + PNR (c) v = 6.8 Mm/s k PN i + pN j + PN k (d) 7 = 4.6 Mms i + 3.2 Mm/s j pNÎ + pN j + PN k