The position of an electron is given by r = 7.59ti - 3.5112 j + 2.84k, with t in seconds and 7 in meters. Att = 1.88 s, what are (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 u (give the angle in the range (-180, 180])? (a) Number Units (b) Number Units (c) Number Units (d) Number Units