The position of an electron is given by r= 3.51ti – 7.05rj+ 1.67k, with t in seconds and in meters. Att = 2.27 s, what are The position of an electron is given by T (a) the x-component, (b) the y-component, (c) the magnitude, and (d) the angle relative to the positive direction of the x axis, of the electron's velocity v (give the angle in the range (-180°, 180°])?