Chapter 30, Problem 1PE

### College Physics

1st Edition
Paul Peter Urone + 1 other
ISBN: 9781938168000

Chapter
Section

### College Physics

1st Edition
Paul Peter Urone + 1 other
ISBN: 9781938168000
Textbook Problem

# Using the given charge-to-mass ratios for electrons and protons, and knowing the magnitudes of their charges are equal, what is the ratio of the proton's mass to the electron's? (Note that since the charge-to-mass ratios are given to only three-digit accuracy, your answer may differ from the accepted ratio in the fourth digit.)

To determine

The ratio of the mass of proton to the electron using the given charge-to-mass ratios for electrons and protons when the magnitudes of charges of electrons and protons are equal.

Explanation

Given Data:

Given charge-to-mass ratios for electrons and protons and that, the magnitudes of charges of electrons and protons are equal.

Formula Used:

The ratio of mass of proton to electron is given as

mpme=qemeqpmp

whereqe= Charge of electron

me= Mass of electron

qp= Charge of proton

mp= Mass of proton

Calculation:

The charge to mass ratio for proton is

qpmp=9.57Ã—107C/kg

Also, charge to mass ration for electron is

qeme=âˆ’1

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