Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 21: Q25P (page 626)

How many electrons would have to be removed from a coin to leave it with a charge of +1.0×10−7C ?

Short Answer

Expert verified

The number of electrons to be removed is6.3×1011.

Step by step solution

01

The given data 

Charge of the coin, q=+1.00×10−7C

02

Understanding the concept of quantization of charge 

As we know that a charged particle emits energy in the form of packets, thus, the number of electrons emitted or present can be considered as multiple factors of the electronic charge.

Formula:

The number of electrons present, n=q/e (1)

03

Calculation of the number of electrons

Using the equation (1) and the given data, we can get the number of electrons removed from the coin as given:

n=1.00×10−7C1.60×10−19C=6.3×1011

Hence, the number of electrons removed is 6.3×1011

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Figure 21-18 shows four situations in which particles of charge +qor -qare fixed in place. In each situation, the particles on the xaxis are equidistant from the yaxis. First, consider the middle particle in situation 1; the middle particle experiences an electrostatic force from each of the other two particles. (a) Are the magnitudes Fof those forces the same or different? (b) Is the magnitude of the net force on the middle particle equal to, greater than, or less than 2F? (c) Do the xcomponents of the two forces add or cancel? (d) Do their ycomponents add or cancel? (e) Is the direction of the net force on the middle particle that of the canceling components or the adding components? (f) What is the direction of that net force? Now consider the remaining situations: What is the direction of the net force on the middle particle in (g) situation 2, (h) situation 3, and (i) situation 4? (In each situation, consider the symmetry of the charge distribution and determine the canceling components and the adding components.)

Question: Identify X in the following nuclear reactions:

(a) H1+B9e→X+n;(b)C12+H1→X;(c)N15+H1→H4e+X.Appendix F will help.

Two small, positively charged spheres have a combined charge of5.0×10−5 C. If each sphere is repelled from the other by an electrostatic force of1.0Nwhen the spheres are2.0mapart, what is the charge on the sphere with the smaller charge?

In Fig. 21-15, a central particle of charge-qis surrounded by two circular rings of charged particles. What are the magnitude and direction of the net electrostatic force on the central particle due to the other particles? (Hint:Consider symmetry.)

Two point charges of30 nCand localid="1663923530148" -40 nCare held fixed on an -axis, at the origin and atx=72cm , respectively. A particle with a charge oflocalid="1663923537824" 42 μC is released from rest at x=28 cm. If the initial acceleration of the particle has a magnitude of100 km/s2 , what is the particle’s mass?
See all solutions

Recommended explanations on Physics Textbooks

Physical Quantities And Units

Read Explanation

Oscillations

Read Explanation

Force

Read Explanation

Fields in Physics

Read Explanation

Geometrical and Physical Optics

Read Explanation

Quantum Physics

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free