Exam I Review.RI-1 How many V (microvolts) in one kV (kilovolt)?A) 1000 B) 105C) 106D) 109E) None of these.RI-2 A calculator question: 105 = ? A) 1E5 B) 10E5 C) something else.RI-3 A ball is thrown upward at an initial velocity v0. Which formula should you use to determine the maximum height of the ball?(A) ov v a t= +(B)2o ox x v t (1/ 2) a t= + +(C)2 2o ov v 2a (x x )= + -(D) None of these will help answer the question.RI-4 A box of mass m and net charge Q is on a frictionless plane inclined at angle . What is the magnitude of the electric force, F = QE, necessary to keep the box from sliding down the incline?A) Not enough info given to answer the question.B) mgC) mg /cosD) mg sinE) mg/ sinRI-5 Does the magnitude of the normal force N depend on the magnitude of the E-field?A) Yes B) NoRI-6 Two pith balls, each of mass m, are suspended by light strings fromthe same pivot point. The two balls are each positively charged, so they repel. The left ball has a larger charge of +3Q, while the right ball has a smaller charge of +Q. Which figure most accurately shows the equilibrium positions of the charged pith balls?+3Q +Q uncharged+3Q +Q +3Q +Q A B CDE m, +Q N QEmgRI-7 Three equal mass charges are released from rest at the positions shown on the x-axis. Which mass has the largest initial acceleration?A) A B) B C) CD) 2 of the masses have the same acceleration.E) Some other answer.RI-8 Four charges are arranged as shown,all a distance r from the origin. What is thedirection of the E-field?RI-9 What is the magnitude of the E-field at the origin, in units of kQ/r2?A) 2 B) 3 C) 4 D) None of these.A BC+Q+Q-QA)B)C)D)E) None of these+Q– 4Q–Qr–QRII-10A point charge +q is brought from infinity to a point b near 3 other charges +Q,–Q, and +2Q. The charge q is brought along 3 different paths in turn, path 1, path 2, and path 3, as shown. Along which path is the most work done by the external agent carrying the charge +q?A) 1 B) 2 C) 3 D) Same work on all three pathsOnly the three charges +Q, –Q, and +2Q are present (q is absent) and thepoint b is midway between +Q and –Q. The voltage at point b is... A) positive B) negative C) zeroRI-11 TRUE (A) or FALSE (B) ?If the E-field throughout a region of space is zero, the voltage throughout that region must be zero.RI-12 TRUE (A) or FALSE (B) ?If the voltage throughout a region of space is zero, the E-field throughout that region must be zero.+2Q–Q+Q bpath 1path 2path 3Do you know who your PHYS2020 TA is? A) Yes B) NoLec100 11:00-11:50 MWF G1B20 Michael DubsonLec200 1:00-1:50 MWF G1B20 Michael DubsonLab101/201 8am-9:50am M G2B88 Jason Underwood Lab 102/202 2:00-3:50pm M G2B88 Daniel Becker Lab 103/203 8am-9:50 Tu G2B88 Jiahua Cheng Lab 104/204 10am-11:50 Tu G2B88 Charles Seivers Lab 105/205 2:00-3:50 Tu G2B88 Charles Seivers Lab 106/206 4:00-5:50 Tu G2B88 Jiahua Cheng Lab 260 10am-11:50 W G2B88 Max Brown Lab 180 Noon-1:50 W G2B88 Lauren Kost Lab 107/207 2-3:50 W G2B88 Daniel Becker Lab 108/208 8am-9:50 R G2B88 Max Brown Lab 109/209 Noon-1:50 R G2B88 Dale Prull Lab 110/210 2pm-3:50 R G2B88 Hang Du Lab 111/211 4pm-5:50 R G2B88 Hang Du Lab 112/212 8am-9:50 F G2B88 Jason Underwood Lab 113/213 2pm-3:50 F G2B88 Dale
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