At a certain instant, a proton is located at a point P with a velocity vector v

= 3, 40 X ity+\f[(5, 49 x 10 * N) (y - 2); 5, 89 x 103 m/s; 0,823 T; 7, 47 x 10m; (5, 28 x 10 m) (y - 2)]