The figure shows a proton p and an electron e that are at rest on a line in the plane of the page. They are between two large uncharged parallel plates (not shown). Assume the particles are far apart so that their mutual gravitational and electrostatic forces are negligible. An electric field directed toward the top of the page is now established between the plates. Which of the following describes the velocity of the center of mass of the particles before either of them hits one of the plates? Toward the top of the page and increasing Toward the top of the page and constant Toward the bottom of the page and increasing Zero

College Physics
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ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
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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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The figure shows a proton p and an electron e that are at rest on a line in the plane of the page. They are between two large uncharged parallel plates (not shown). Assume the particles are far apart so that their mutual gravitational and electrostatic forces are negligible. An electric field directed toward the top of the page is now established between the plates. Which of the following describes the velocity of the center of mass of the particles before either of them hits one of the plates?

    1. Toward the top of the page and increasing
    2. Toward the top of the page and constant
    3. Toward the bottom of the page and increasing
    4. Zero
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