Essential University Physics
4th Edition
ISBN: 9780134988566
Author: Wolfson, Richard
Publisher: Pearson Education,
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 20, Problem 64P
A 5.0-μm strand of DNA carries charge +e per nm of length. Treating it as a charged line, what’s the electric Held strength 25 nm from the DNA, not near either end?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
You hold a ruler that has a charge on its tip 2.00 cm above a small piece of tissue paper to see if it can be picked up. The ruler has
−14.0 µC
of charge. The tissue has 3.00 g of mass. What is the minimum charge required to pick up the tissue paper?
Most workers in nanotechnology are actively monitored for excess static charge buildup. The human body acts like an insulator as one walks across a carpet, collecting -50 nC per step. What charge buildup will a worker in a manufacturing plant accumulate if she walks 25 steps.
How many electrons are present in that amount of charge?
You hold a ruler that has a charge on its tip 2.00 cm above a small piece of tissue paper to see if it can be picked up. The ruler has
−14.0 µC
of charge. The tissue has 3.00 g of mass. What is the minimum charge required to pick up the tissue paper?
Answer is in µC
Chapter 20 Solutions
Essential University Physics
Ch. 20.1 - The proton is a composite particle composed of...Ch. 20.2 - Charge q1 is located at x = 1 m, y = 0. What...Ch. 20.3 - A positive point charge is located at the origin...Ch. 20.4 - Far from a charge distribution, you measure an...Ch. 20.5 - An electron, a proton, a deuteron (a neutron...Ch. 20 - Conceptual Example 20.1 shows that the...Ch. 20 - A free neutron is unstable and soon decays to...Ch. 20 - Where in Fig. 20.5 could you put a third charge so...Ch. 20 - Equation 20.3 gives the electric field of a point...Ch. 20 - Is the electric force on a charged particle always...
Ch. 20 - Why does a dipole, which has no net charge,...Ch. 20 - The ring in Example 20.6 carries total charge Q,...Ch. 20 - A spherical balloon is initially uncharged. If you...Ch. 20 - Why should there be a force between two dipoles,...Ch. 20 - Dipoles A and B are both located in the field of a...Ch. 20 - Suppose the electron and proton charges differed...Ch. 20 - A typical lightning flash delivers about 25 C of...Ch. 20 - Protons and neutrons are made from combinations of...Ch. 20 - Earth carries a net charge of about 5 105 C. How...Ch. 20 - As they fly, honeybees may acquire electric...Ch. 20 - The electron and proton in a hydrogen atom are...Ch. 20 - An electron at Earths surface experiences a...Ch. 20 - You break a piece of Styrofoam packing material,...Ch. 20 - A charge q is at the point x = 1 m, y = 0 m. Write...Ch. 20 - A proton is at the origin and an electron is at...Ch. 20 - An electron experiences an electric force of 0.61...Ch. 20 - Find the magnitude of the electric force on a...Ch. 20 - A 68-nC charge experiences a 150-mN force in a...Ch. 20 - The electric field inside a cell membrane is 8.0...Ch. 20 - A 1.0-C charge experiences a 10-N electric force...Ch. 20 - The electron in a hydrogen atom is 52.9 pm from...Ch. 20 - In Fig. 20.28, point P is midway between the two...Ch. 20 - The water molecule’s dipole moment is 6.17 × 10–30...Ch. 20 - The electric field 22 cm from a long wire carrying...Ch. 20 - Find the line charge density on a long wire if the...Ch. 20 - Find the magnitude of the electric field due to a...Ch. 20 - In his famous 1909 experiment that demonstrated...Ch. 20 - How strong an electric field is needed to...Ch. 20 - A proton moving to the right at 3.8l05m/s enters a...Ch. 20 - An electrostatic analyzer like that of Example...Ch. 20 - Example 20.2: Charge on raindrops vary widely in...Ch. 20 - Example 20.2: Suppose that all three raindrops in...Ch. 20 - Example 20.2: (a) Repeat Example 20.2 to find the...Ch. 20 - Example 20.2: (a) Use calculus to show that the...Ch. 20 - Example 20.7: A 1.00-km length of power line...Ch. 20 - Example 20.7: A uniformly charged wire is 2.18 m...Ch. 20 - Example 20.7: A thin rod of length L lies on the...Ch. 20 - Example 20.7: A thin rod of length L lies on the...Ch. 20 - Two charges, one whose magnitude is twice as large...Ch. 20 - A proton is on the x-axis at x = 1.6 nm. An...Ch. 20 - A charge 3q is at the origin, and a charge 2q is...Ch. 20 - A negative charge q lies midway between two...Ch. 20 - In Fig. 20.29, take q1 = 68 C, q2 = 34 C, and q3 =...Ch. 20 - FIGURE 20.20 Problems 44 and 45 45. In Fig. 20.29,...Ch. 20 - DNA fragments introduced into an electrophoresis...Ch. 20 - A proton is at the origin and an ion is at x = 5.0...Ch. 20 - Four equal charges Q are at the comers of a square...Ch. 20 - A dipole lies on the y-axis and consists of an...Ch. 20 - Show that the field on the x-axis for the dipole...Ch. 20 - Youre 1.44 m from a charge distribution that is...Ch. 20 - Three identical charges q form an equilateral...Ch. 20 - Two identical small metal spheres initially carry...Ch. 20 - Two 38.0-C charges are attached to opposite ends...Ch. 20 - A positive charge Q is located at the origin, and...Ch. 20 - An electron is moving in a circular path around a...Ch. 20 - Find the line charge density on a long wire if a...Ch. 20 - A dipole with dipole moment 1.5 nCm is oriented at...Ch. 20 - You have a job examining patent applications....Ch. 20 - A 5.0-m strand of DNA carries charge +e per nm of...Ch. 20 - Heating in a microwave oven occurs as water...Ch. 20 - A dipole with charges q and separation 2a is...Ch. 20 - Youre taking physical chemistry, and your...Ch. 20 - The electric field on the axis of a uniformly...Ch. 20 - An electric quadrupole consists of two oppositely...Ch. 20 - Four charges lie at the corners of a square of...Ch. 20 - A straight wire 10 m long carries 25 C distributed...Ch. 20 - Two thin rods, each of length a, lie along the...Ch. 20 - Figure 20.35 shows a thin, uniformly charged disk...Ch. 20 - Use the result of Problem 73 to show that the...Ch. 20 - Use the binomial theorem to show that, for x R,...Ch. 20 - A semicircular loop of radius a carries positive...Ch. 20 - A thin rod carries charge Q distributed uniformly...Ch. 20 - A thin rod extends along the x-axis from x = 0 to...Ch. 20 - Youre working on the design of an ink-jet printer....Ch. 20 - BIO The human heart consists largely of elongated...Ch. 20 - At a given distance, far from the heart compared...Ch. 20 - The difference between Figs. 20.38a and 20.38b...Ch. 20 - At the instant shown in Fig. 20.38c, theres an...
Additional Science Textbook Solutions
Find more solutions based on key concepts
The pV-diagram of the Carnot cycle.
Sears And Zemansky's University Physics With Modern Physics
Choose the best answer to each of the following. Explain your reasoning. Which method could detect a planet in ...
Cosmic Perspective Fundamentals
A refrigerator extracts energy from its contents at the rate of 95 W. How long will it take to freeze 750 g of ...
Essential University Physics: Volume 1 (3rd Edition)
17. 350 cm2 = _______m2
Applied Physics (11th Edition)
Why do scientists think life on Mars is more likely than life on Venus?
Conceptual Integrated Science
Youre inside a metal building that blocks radio waves, but youre trying to make a call with your cell phone, wh...
Essential University Physics (3rd Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- Two 2.2 cm-diameter disks face each other, 3.0 mmmm apart. They are charged to ± 11 nC. What is the electric field strength between the disks? Express your answer to two significant figures and include the appropriate unitsarrow_forwardA charge of 3 μC is uniformly distributed along a filament of length 60 cm. What is the electric field at a point 30 cm from one of the ends along the filament direction?arrow_forwardTwo red blood cells each have a mass of 9.05 × 10-14 kg and carry a negative charge spread uniformly over their surfaces. The repulsion arising from the excess charge prevents the cells from clumping together. One cell carries -3.00 pC and the other -2.60 pC, and each cell can be modeled as a sphere 3.75 × 10-º m in radius. If the red blood cells start very far apart and move directly toward each other with the same speed, what initial speed would each need so that they get close enough to just barely touch? Assume that there is no viscous drag from any of the surrounding liquid. initial speed: m/s What is the maximum acceleration of the cells as they move toward each other and just barely touch? maximum acceleration: m/s?arrow_forward
- In the quark model of fundamental particles, a proton is composed of three-point particles called quarks: two “up” quarks, each having charge +e 2/3, and one down quark, having charge -e/3, where e is the charge on the proton. Suppose the three quarks are equidistant from each other on a triangle. Take the distance to be 1.32 x 10-15 m and calculate the total electric potential energy of the three-particle system.arrow_forwardA 2.0 mm × 4.0 mm flat carpet acquires a uniformly distributed charge of −−10 μC after you and your friends walk across it several times. A 5.0 μg dust particle is suspended in midair just above the center of the carpet. What is the charge on the dust particle?arrow_forwardTwo red blood cells each have a mass of 9.05 x 10-14 kg and carry a negative charge spread uniformly over their surfaces. The repulsion arising from the excess charge prevents the cells from clumping together. One cell carries -2.30 pC and the other -3.50 pC, and each cell can be modeled as a sphere 3.75 × 10-6 m in radius. If the red blood cells start very far apart and move directly toward each other with the same speed, what initial speed would each need so that they get close enough to just barely touch? Assume that there is no viscous drag from any of the surrounding liquid. initial speed: What is the maximum acceleration of the cells as they move toward each other and just barely touch? maximum acceleration: m/s m/s²arrow_forward
- Two red blood cells each have a mass of 9.05 x 10-14 kg and carry a negative charge spread uniformly over their surfaces. The repulsion arising from the excess charge prevents the cells from clumping together. One cell carries -2.30 pC and the other -3.50 pC, and each cell can be modeled as a sphere 3.75 × 10-6 m in radius. If the red blood cells start very far apart and move directly toward each other with the same speed, what initial speed would each need so that they get close enough to just barely touch? Assume that there is no viscous drag from any of the surrounding liquid. initial speed: 462 Incorrect What is the maximum acceleration of the cells as they move toward each other and just barely touch? maximum acceleration: 5.69 x1010 Incorrect m/s m/s²arrow_forwardA charged conductor of area 40 cm? carries a uniformly distributed charged of 0.2 µC. Determine the mechanical force per unit area of this conductor. Assume that conductor is kept in air.arrow_forwardThe two spherical shell has a charge of q1=0.30nC and q2 = 0.5nC. The radius of r1=7.5cm and r2 = 2.5cm. What is the new votage value in volts, after the charge transfer is completed between the two spheres?arrow_forward
- In deep space, two spheres each of radius 5.00 m are connected by a 3.00 x 102 m nonconducting cord. If a uniformly distributed charge of 35.0 mC resides on the surface of each sphere, calculate the tension in the cord.arrow_forwardQuestion 1. Two conductive spheres have the radius R1 = 0.2 m and R2 = 0.1 m. The spheres have the charge ql = 6 nC and q2 = -4 nC and are located at a distance from each other that is much larger than the radius of the spheres. A conductive wire is inserted between them so that charge can travel from one sphere to the other. The wire is then removed. How is the charge now distributed on the two spheres?arrow_forwardTwo thin 80.0-cm rods are oriented at right angles to each other. Each rod has one end at the origin of the coordinates, and one of them extends along the +r-axis while the other extends along the +y-axis. The rod along the +r-axis carries a charge of -15.0 uC distributed uniformly along its length, and the other rod carries +15.0 uC uniformly over its length. Find the magnitude and direction of the net electrical force that these two rods exert on an electron located at the point (40.0 cm, 40.0 cm). (e = 1.60 x 10-19 C,€o = 8.85 x 10-12C2/N m²)arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningUniversity Physics (14th Edition)PhysicsISBN:9780133969290Author:Hugh D. Young, Roger A. FreedmanPublisher:PEARSONIntroduction To Quantum MechanicsPhysicsISBN:9781107189638Author:Griffiths, David J., Schroeter, Darrell F.Publisher:Cambridge University Press
- Physics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningLecture- Tutorials for Introductory AstronomyPhysicsISBN:9780321820464Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina BrissendenPublisher:Addison-WesleyCollege Physics: A Strategic Approach (4th Editio...PhysicsISBN:9780134609034Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart FieldPublisher:PEARSON
College Physics
Physics
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
University Physics (14th Edition)
Physics
ISBN:9780133969290
Author:Hugh D. Young, Roger A. Freedman
Publisher:PEARSON
Introduction To Quantum Mechanics
Physics
ISBN:9781107189638
Author:Griffiths, David J., Schroeter, Darrell F.
Publisher:Cambridge University Press
Physics for Scientists and Engineers
Physics
ISBN:9781337553278
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Lecture- Tutorials for Introductory Astronomy
Physics
ISBN:9780321820464
Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina Brissenden
Publisher:Addison-Wesley
College Physics: A Strategic Approach (4th Editio...
Physics
ISBN:9780134609034
Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher:PEARSON
Electric Fields: Crash Course Physics #26; Author: CrashCourse;https://www.youtube.com/watch?v=mdulzEfQXDE;License: Standard YouTube License, CC-BY