{14%) Problem 4: A negative charge of q = -7.9 x 10'17C and m = 7.6 x 10'26 kg enters a magnetic eld B = 0.25 T with initial velocity v = 95 0 m/s, as shown in the gure. The magnetic eld points into the screen. X X Randomized Variables x x 0 q = -729 x 10% m = 7.6 x 10'26 kg B = 0.25 T X X I; = 950 m/s X X ; 13 \"/6 Part (3) Which direction will the magnetic force be on the charge? Downward. V Correct! ; 13 % Part (b) Express the magnitude of the us of g, V, and B. F: Iql ( v B) I/ Correct! 7 13 "/0 Part (c) Calculate the magnitude of tht F: 1.57 *10'\" F = 1.870 x 10"4 .1 Correct! . 13 \"/6 Part (:1) Under such a magnetic force, which kind of motion will the charge undergo? Unifom circular motion. I/ Correct! . 13 % Part (e) Express the centripetal acceleration of the particle in terms of the force F and the mass m. a = Ffm I/ Correct! 7 3 13 "/0 Part (f) Calculate the magnitude of a, in meters per square second. a : - 2.445 * 10'\" a = 2.460 x 104\" X _-\\llL'J]]]Jl.'sRL'l11'.lll] ; 13 "/0 Part (g) Express the radius, R, of the circular motion in terms of the centripetal acceleration a and the speed v. R = vzp'a V Correct! A 13% Part (h) Calculate the numerical value of the radius R, in meters. R=| Deg2rees O Radians Submit Hint rat-met l Igiveup