Question 1 Use the following information to answer the next question. Not yet Two identically charged electroscopes are shown below. answered Marked out of 1.00 Electroscope I Electroscope II Flag question A student touches Electroscope I with a neutral glass rod. The student touches Electroscope II with a neutral metal rod. Which of the following diagrams best shows the leaves of the electroscopes after the electroscopes are touched with the rods?Which of the following diagrams best shows the leaves of the electroscopes after the electroscopes are touched with the rods? Select one: O a. O b. O c. O d.One charged object exerts a force, F, on a second charged object. If the distance between the two charged objects is doubled, and the charge on one of the objects is doubled, then the electric force that one charge exerts on the other is out Select one: O a. 2 O b. F O c. 4F O d. 4F 3 Use the following information to answer the next question Charged spheres I, II, and Ill are located as shown below. out 91 =-2.80 uC 911 = -6.50 uC 9111 = +3.50 uC I II III 20.0 cm 10.0 cm The net electrostatic force on sphere III that is caused by the charges on spheres I and II is Select one: O a. 21.4 N, left O b. 19.5 N, left O c. 2.14 x 10 * N, left O d. 1.95 x 10 N, leftThis question has three parts. Enter your answer for each question in the blank provided. out Questions 4(a) Use the following information to answer the next three questions A student has three identical spheres, K, L, and M, on insulated stands equally spaced in a line as shown below. The charges on the spheres are qk = -2x, qL = +4x, and qM = -3x The direction of the net electric force on sphere L due to spheres K and M is A. toward the bottom of the page B. toward the top of the page C. to the right of the page D. to the left of the page Enter your choice for Questions 4(a) hereQuestion 4(b) At point P, above sphere L, the direction of the net electric field is mostly A. to the left of the page B. to the right of the page C. toward the top of the page D. toward the bottom of the page Enter your choice for Questions 4(b) here Question 4(c) Use the following additional information to answer the next question. The spheres are touched together and separated, without grounding, in the following order. Step I Spheres K and L Step II Spheres K and M Step III Spheres L and M Which of the following rows indicates the final charge present on each sphere? Row K L M 1x 1x 3x B -1X 1x -1X 1X Enter your choice for Questions 4(c) here5 Use the following information to answer the next question. ad out Position N + Position M An alpha particle is moved from Position M to Position N in a region between oppositely charged parallel plates as illustrated above. As a result of this change in position, the Select one: O a. the electric force on the object has increased O b. the electric force on the object has decreased O c. the electric potential energy of the object has increased O d. the electric potential energy of the object has decreased6 Use the following information to answer the next question. d Two oppositely charged parallel plates have an electric potential difference of 3.1 x 102 V across them. The plates are 5.2 x 10-2 m apart. An alpha particle enters the region between the plates through a hole in the negatively charged plate and comes to rest just out before it reaches the positively charged plate. Positively charged plate Negatively charged plate Path of alpha particle The initial speed of the alpha particle as it enters the electric field is Select one: O a. 1.7 x 105 m/s O b. 1.2 x 105 m/s O c. 8.6 x 10# m/s O d. 2.3 x 104 m/s7 Use the following information to answer the next question. A pair of parallel plates is separated by a distance of 1 cm and is connected to a 6 V battery. The magnitude of the electric field between the two plates is |E1 |. A second pair of parallel plates, identical to the first, is separated by a distance of 3 cm and is connected to a 12 V battery. The magnitude of the out electric field between these two plates is |Ez |. Which of the following equations describes |Ez | in terms of |E , |? Select one: O a. E2 |= = 161 1 O b. |E2|= 3|61 1 O d. 16, 1= = 16 18 Use the following information to answer the next question. A positively charged sphere is accelerated from rest through the electric potential difference in the region labelled X in the diagram below. It then travels into Region Y. The entire apparatus is in a vacuum. out - - - -- Charged + + + sphere + + + + + + ++ + ++ Region X Region Y Which of the following free-body diagrams, drawn to scale, shows the forces acting on the positively charged sphere when it is in Region Y?\fThe electric field strength at a distance of 4.00 cm from a 2.7 x 10" C point charge, expressed in scientific notation, is a.bc x 10" N/C. The values of a, b, c, and d are ,and out (Record all four digits of your answer in the blanks.) 10 Which of the following unit combinations is appropriate for electric field strength? Select one: out O a. O b. JA m O c. I.A m 'S O d. J's.m A 11 An oil drop of mass 3.3 x 10 14 kg is suspended in an electric field of 1.0 x 10" N/C between horizontal plates that are 2.6 x 10-2 m apart. The number of excess electrons on the oil drop is out Select one: O a. 2 O b. 3 O c. 4 Od. 812 Use the following information to answer the next question. Diagram I, below, shows selected magnetic field lines between opposite poles, point P, and an arrow representing the magnetic field strength at point P. out Diagram I N S Diagram II shows the same magnetic field, the same point P, a current-carrying wire oriented perpendicular to the magnetic field, and the direction of the electron flow in the current-carrying wire. Diagram II N S (X) Represents electron flow into the page Which of the following diagrams, drawn to the same scale as Diagram I above, represents the net magnetic field strength at point P in Diagram II, if the induced magnetic field due to the electron flow is twice the magnitude of the field strength at point P in Diagram I?\f14 An alpha particle in a magnetic field travels in a circular path that has a radius of 15.0 cm. If the magnetic field strength is 6.3 x 10-3 T, then the speed of the alpha particle is out Select one: O a. 4.5 x 104 m/s Ob. 9.1 x 104 m/s O c. 4.5 x 105 m/s O d. 3.3 x 108 m/s 15 A current-carrying conductor that is 3.00 x 10"