memo" 1 If a 1watch battery delivers a current of 1.0 x 10'5 A, how many electrons leave the battery every second? hotyet answer'Ed Select one: Marked out of 45 1.00 O a. 6,3 x '10 '1" Flag question 0 b. 6.3 X 1012 O c. 6.3 x 1015 C) d. 5.3 x 1031 Que-5\"\" 2 A charged particle experiences a force of 4.62 N when it passes through a magnetic eld. If the same particle were hotxet sent at exactly half its previous speed, through a magnetic field exactly four times as strong. the particle would answered " experience a force of N. Express your answer to three signicant gures. Marked out of 2- 1.00 '3 Flag question Question 3 hot yet a nswere cl Marked out of 1.00 '1" Flag question Question 4 hot yet a nswe re cl Marked out of 1.00 '1" Hag question A proton and an electron traveling at the same velocity enter a magnetic field at rig ht angles to the eld. Compared to the electron's deflection, the proton's deflection will be in the Select one: D a. same direction, with a smaller radius of curvature. O b. opposite direction. with a smaller radius of curvature. O c. opposite direction. with a larger radius of curvature. C) d. same direction, with a larger radius of curvature. The diagrams below show the direction ofa magnetic field relative to a set of coordinate axes. A negatively charged particle travels across the page in the positive Jr direction. The magnetic conguration that will cause the particle to bend in the positive 2 direction is A. B. .1' .'.|' x x S N C. D. J' y S N bl. luv-.1: N S Select one: C) a. Diagram A O b. Diagram B O c. Diagram C 0 cl. Diagram D \fQuestion 7 h.- ot yet answe re d Marked out of 1.00 "1" Flag question Question 8 h at yet answere d Marked out of 1.00 l" Flag question Time left 1:58:13 Use the following information to answer the next question: Earth's Magnetic Field The solar Wind consists of particles entitled by the Sun. Some of these particles are charged; therefore. when they enter Earth's magnetic eld. the}.r experience a magletic force. A stream of charged particles travelling with a speed of 3.00 x 1'1?!5 m-'s encomtets Earth's magnetic eld, as shown below. at an alum-11c where the. eld has a magnmde of 1.10 w. 10'." T. Path of total wind at - a pamculat instant in time """""" Assume that the velocity of the solar wind particles is perpendicular to the magnetic field. The radius ofthe circular path that the protons in a solar wind follow expressed in scientific notation, is a.bc x 10':1 m. The values of a, b, c, and d are | l . For example, ifyou find the answer to be 1.23 x 104 m, you would enter your answer as 1234. A copper wire is connected to a battery so that it has a current in it. A segment of the wire is perpendicuiar to a horizontal 3.5 T magnetic field. The length of the wire in the magnetic field is 3.0 cm, and the mass of the wire affected by the magnetic field is 20 g. In order to suspend the segment of wire, the minimum current in the wire must be Select one: D a. 0.044 A O b. 0.23 A O c. 4.4 A Dd. 44A ques'i'm 9 Use the following information to answer the next question. Not yet answered A student used the apparatus shown below to measure the radius of curvature of the path of electrons as they pass M _ d f through a magnetic field that is perpendicular to their path. This experimental design has the voltage as the t _ . . . . am DU 0 manipulated variable, the speed calculated from the voltage, and the radius as the responding variable. 1.00 '3." Flag question Acceleratmg Potentlal Dime (V) Speed {106 111's) Radlus {10" m) 20.0 2.65 T2 40.0 3.1'5 9.1 60.0 4.59 11.0 80.0 5.30 12.3 100.0 5.93 14.1 120.0 6.49 16.3 111111! voltag- lib-more . ' . . . -I-. 500.1% '5". '\\ a l. '4 Mailman i I x\" indicates magnetic eld into the page First, plot a graph of radius as a function of speed, and construct a bestfit line. You may do this either electronically or on your graphing calculator. The slope ofthis graph is i. Please be careful about entering scientific notation! Using the slope of the above graph. the strength of the magnetic field isi T. Please do not enter your answer in scientific notation. Enter it in proper notation. For example. if your answer is 7.42 x 10'5, enter it as 0.0000742. Question 1 9 hot yet answered hale-"iced out of 1.03 "-' F-ag question Use the following information to answer the next question: about the axis KY. coil \\ Y pole of magnet pole of magnet N S X the coil. The diagram below shows a coil of wire that can rotate between the poles of a magnet A current is passed through the coil by means of a commutator connected to the ends of Time left 1 :57145 What is the position ofthe coil in the magnetic field so that its turning effect is a maximum and what is the position of the coil when the current is reversed so that the coil rotates continuously? plane of coil for maximum turning e'ect plane of coil for reversal of current A. parallel to direction of eld parallel to direction of eld B. normal to direction of eld parallel to direction of eld C. parallel to direction of eld normal to direction of field D. normal to direction of field Select one: Q a. Row A C- b. Row B C) c. Row C C} cl. Row D