Return to PHYS 152 Past Exams & Answers
1a. 2.4 MeV
1b. 8.5 x 10^13 mW
1c. 2.0 x 10^6 mm^2
1d. 30. kV/cm
2. F, F, T, T, F, F
4d. 3.34 nC (V = kQ/r, and solve for Q)
1a(i). 20.0 ohms
1a(ii). 0.600 A
1b. connect one 50-ohm and one 100-ohm resistor in parallel; connect the pair in series with the remaining 50-ohm resistor
2a. negative plate on left; positive plate on right
2b. Equally spaced parallel horizontal lines running from right-hand (positive) plate to left-hand (negative) plate.
2c. Two equally spaced parallel vertical lines, spaced one-third and two-thirds of the way between the plates. Left-hand equipotential is at 50 kV; right-hand equipotential is at 100 kV.
2e. A, C, and D
2f. v_f = sqrt(2 * |q| * V / m) Use conservation of energy: -deltaU = deltaK, so: -q*V = (1/2)m*v^2. OR can use: F = |q|*E, E = V/d; a = F/m; and v_f^2 = v_0^2 + 2*a*d.