Problem 2 Magnetic force on a proton A proton having a speed of 50 x 10 m/s in a magnetic field feels a force of 80 x 10-14N toward the west when it moves vertically upward (see Fig. at the right). When moving horizontally in a northerly Moving into page (north) (west) direction, it feels zero force (see Fig. b). Determine the magnitude and direction of the magnetic field in this region. (The charge on a proton is q = +e = 16 x 10-¹C). Approach Since the proton feels no force when moving north, the field must be in a north- south direction. In order to produce a force to the west when the proton moves upward, the right-hand rule tells us that B must point toward the north. (Your thumb points west and the outstretched fingers of your right-hand point upward only when your bent fingers point north.) The magnitude of B is found using this formula, F = qvB sin 8. (up)

Problem 2 Magnetic force on a proton A proton having a speed of 50 x 10 m/s in a magnetic field feels a force of 80 x 10-14N toward the west when it moves vertically upward (see Fig. at the right). When moving horizontally in a northerly Moving into page (north) (west) direction, it feels zero force (see Fig. b). Determine the magnitude and direction of the magnetic field in this region. (The charge on a proton is q = +e = 16 x 10-¹C). Approach Since the proton feels no force when moving north, the field must be in a north- south direction. In order to produce a force to the west when the proton moves upward, the right-hand rule tells us that B must point toward the north. (Your thumb points west and the outstretched fingers of your right-hand point upward only when your bent fingers point north.) The magnitude of B is found using this formula, F = qvB sin 8. (up)

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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