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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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Use the following evidence from a Millikan oil-drop experiment to determine the number of excess elementary charges on a charged sphere suspended between parallel plates.
m = 4.2 10^–15 kg
V = 430 V
d = 0.50 cm

	3
	5
	20
	300

Expert Solution

Step 1: INTRODUCTION

Given Data:

The mass of the charge is $m equals 4.2 cross times 10 to the power of negative 15 end exponent space k g$

The potential difference is $V equals 430 space V$

The distance between the plates is $d equals 0.5 space c m equals 0.005 space m$

The electric field is given by

$E equals V over d.... left parenthesis 1 right parenthesis$

From oil drop experiment we get,

$q E equals m g space space space q equals fraction numerator m g over denominator E end fraction.... left parenthesis 2 right parenthesis$

$q$ is the amount of charge on the sphere.

$g equals 9.81 space m over s squared$ , acceleration due to gravity.

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