72 A beam of electrons whose kinetic energy is K emerges from a thin-foil "window" at the end of an accelerator tube. A metal plate at dis- tance d from this window is perpendi- window. cular to the direction of the emerging beam (Fig. 28-53). (a) Show that we Tube can prevent the beam from hitting the plate if we apply a uniform mag- Foil Electron beam Plate Figure 28-53 Problem 72. netic field such that 2 mK B z. in which m and e are the electron mass and charge. (b) How should B be oriented?

72 A beam of electrons whose kinetic energy is K emerges from a thin-foil "window" at the end of an accelerator tube. A metal plate at dis- tance d from this window is perpendi- window. cular to the direction of the emerging beam (Fig. 28-53). (a) Show that we Tube can prevent the beam from hitting the plate if we apply a uniform mag- Foil Electron beam Plate Figure 28-53 Problem 72. netic field such that 2 mK B z. in which m and e are the electron mass and charge. (b) How should B be oriented?

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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