Part BIs the electron's speed at f greater than, less than, or equal to its speed at i? Explain.Match the words in the left column to the appropriate blanks in the sentences on the right.Submitrepel fromattract todo not interact withtends to slow downtends to acceleratedoes not affectgreater thanless thanequal toRequest AnswerThe charges with the opposite signsReset Helpeach other. That is, the interaction forcethe charges as they move farther apart. Therefore, the electron's speed at f isthat at i. An electron moves along the trajectory of (Figure 1) from ito f.Figure+++1 of 1fPart ADoes the electric potential energy increase, decrease, or stay the same? Explain.Match the words in the left column to the appropriate blanks in the sentences on the right.SubmitPart BT72decreasespositivenegativeincreasesremains the samep-1Request AnswerThe electric potential energy of the charges is proportional tocharges has, so its absolute valuewith increase of r. As the charges have opposite signs, the potential energy of thesign. Thus, the potential energyas r increases.Reset HelpIs the electron's speed at f greater than, less than, or equal to its speed at i? Explain.Match the words in the left column to the appropriate blanks in the sentences on the right.

A) Write the expression for the electric potential energy. U=−kq1q2rU∝r−1 Here, k is Coulomb's law…

Answered: An electron moves along the trajectory…

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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Part B
Is the electron's speed at f greater than, less than, or equal to its speed at i? Explain.
Match the words in the left column to the appropriate blanks in the sentences on the right.
Submit
repel from
attract to
do not interact with
tends to slow down
tends to accelerate
does not affect
greater than
less than
equal to
Request Answer
The charges with the opposite signs
Reset Help
each other. That is, the interaction force
the charges as they move farther apart. Therefore, the electron's speed at f is
that at i.

An electron moves along the trajectory of (Figure 1) from i
to f.
Figure
++
+
1 of 1
f
Part A
Does the electric potential energy increase, decrease, or stay the same? Explain.
Match the words in the left column to the appropriate blanks in the sentences on the right.
Submit
Part B
T
72
decreases
positive
negative
increases
remains the same
p-1
Request Answer
The electric potential energy of the charges is proportional to
charges has
, so its absolute value
with increase of r. As the charges have opposite signs, the potential energy of the
sign. Thus, the potential energy
as r increases.
Reset Help
Is the electron's speed at f greater than, less than, or equal to its speed at i? Explain.
Match the words in the left column to the appropriate blanks in the sentences on the right.

Expert Solution

Step 1

Write the expression for the electric potential energy.

$\begin{array}{l} U = - \frac{k q_{1} q_{2}}{r} \\ U \propto r^{- 1} \end{array}$

Here, k is Coulomb's law constant, q₁ and q₂ are the charges, and r is the distance between the charges.

The electric potential energy of the charges is proportional to r^-1. So, its absolute value decreases with increase of r. As the charges have opposite signs, the potential energy of the charges will have positive sign. Thus, the potential energy will increase as r increases.

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