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A charged oil drop of mass m and electric charge q falling through air experiences a resistive force -myv. Starting from rest, it falls for a time interval T1. At time t = T1, an oscillating electric field E = E. cos or is turned on. (Suppose that z = 0 at t = 0 and is positive in the downward direction.) 1. For O SI <Ti, the motion of the particle is best described by which of the following for z(t): (a) Ae" (b), (c) en (d) At – Ber + C, for some constants A.B.C. O(a) О(b) O(c) Old) 2. Suppose that the steady state motion after t > Ti is described by z(t) = A cos(oot + 8). The values of the constants are 1. A = (a) mo+y (b) y + g (1 - e-m2 (c) (d) B O(a) (b) O(c) Old) GEO --- 2. tan 8 = (a) 1-e- (b); (c) (d) 0 7) O(a) O(b) O(c) Old) 3. The motion z(t) of the drop after T, is best described by which of the following graphs 20 ze བསགས་པས་ལུས་ A MacBook Dro.
2. tan 5 = (a) (b) (c) (do Ofa) (b) Ote) 10) 3. The motion z(t) of the drop after T, is best described by which of the following graphs 2 (1) (2) (3) ) (4) 26) O(1) O(2) O(3) 0(4)