College Physics: A Strategic Approach (4th Edition)
4th Edition
ISBN: 9780134609034
Author: Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 21, Problem 27MCQ
A bug zapper consists of two metal plates connected to a high-voltage power supply. The voltage between the plates is set to give an electric field slightly less than 1 × 106 V/m. When a bug flies between the two plates, it increases the field enough to initiate a spark that incinerates the bug. If a bug zapper has a 4000 V power supply, what is the approximate separation between the plates?
A. 0.05 cm
B. 0.5 cm
C. 5cm
D. 50 cm
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
A dielectric is ____; when placed between the plates of a capacitor, it gives a lower potential with difference with the same charge, due to the polarization of the material.
A. A conductor
B. An insulator
C. An inhibitor
D. A reflector
Explain ty
A bug zapper consists of two metal plates connected to a high-voltage power supply. The voltage between the plates is set to give an electric field slightly less than 1 x 106 V/m. When a bug flies between the two plates, it increases the field enough to initiate a spark that incinerates the bug. If a bug zapperhas a 4000 V power supply, what is the approximate separation between the plates?A. 0.05 cm B. 0.5 cm C. 5 cm D. 50 cm
What is the standard SI unit for electric potential difference?
A. Ampere
B. Coulomb
C. Joules
D. Volt
What is the equation of electric potential?
A. V = d²/f
B. V = U/Q
C. V= td
D. V = kQq/r2
%3D
Chapter 21 Solutions
College Physics: A Strategic Approach (4th Edition)
Ch. 21 - By moving a 10 nC charge from point A to point B,...Ch. 21 - Charge q is fired through a small hole in the...Ch. 21 - Prob. 3CQCh. 21 - Prob. 4CQCh. 21 - An electron moves along the trajectory from i to f...Ch. 21 - As shown in Figure Q21.7, two protons are launched...Ch. 21 - Prob. 7CQCh. 21 - Figure Q21.9 shows two points inside a capacitor....Ch. 21 - A capacitor with plates separated by distanced is...Ch. 21 - Prob. 10CQ
Ch. 21 - Prob. 11CQCh. 21 - Prob. 12CQCh. 21 - Prob. 13CQCh. 21 - Prob. 14CQCh. 21 - Prob. 15CQCh. 21 - Prob. 17CQCh. 21 - Prob. 18MCQCh. 21 - A 1.0 nC positive point charge is located at point...Ch. 21 - Prob. 20MCQCh. 21 - Prob. 21MCQCh. 21 - Prob. 22MCQCh. 21 - Prob. 23MCQCh. 21 - Prob. 24MCQCh. 21 - Prob. 25MCQCh. 21 - Prob. 26MCQCh. 21 - A bug zapper consists of two metal plates...Ch. 21 - An atom of helium and one of argon are singly...Ch. 21 - Prob. 29MCQCh. 21 - Prob. 30MCQCh. 21 - Prob. 31MCQCh. 21 - Prob. 32MCQCh. 21 - Moving a charge from point A, where the potential...Ch. 21 - The graph in Figure P21.2 shows the electric...Ch. 21 - It takes 3.0 J of work to move a 15 nC charge from...Ch. 21 - Prob. 4PCh. 21 - A 20 nC charge is moved from a point where V = 150...Ch. 21 - Prob. 6PCh. 21 - At one point in space, the electric potential...Ch. 21 - Prob. 8PCh. 21 - What potential difference is needed to accelerate...Ch. 21 - Prob. 10PCh. 21 - An electron with an initial speed of 500,000 m/s...Ch. 21 - Prob. 12PCh. 21 - A proton with an initial speed of 800,000 m/s is...Ch. 21 - The electric potential at a point that is halfway...Ch. 21 - A 2.0 cm 2.0 cm parallel-plate capacitor has a...Ch. 21 - Two 2.00 cm 2.00 cm plates that form a...Ch. 21 - Prob. 18PCh. 21 - Prob. 19PCh. 21 - Prob. 20PCh. 21 - Prob. 21PCh. 21 - Prob. 22PCh. 21 - a. What is the potential difference between the...Ch. 21 - Prob. 24PCh. 21 - Prob. 25PCh. 21 - Prob. 26PCh. 21 - Prob. 27PCh. 21 - Prob. 28PCh. 21 - Prob. 29PCh. 21 - Prob. 30PCh. 21 - What are the magnitude and direction of the...Ch. 21 - Prob. 32PCh. 21 - Prob. 33PCh. 21 - Prob. 34PCh. 21 - Prob. 35PCh. 21 - Prob. 36PCh. 21 - Two 2.0 cm 2.0 cm square aluminum electrodes,...Ch. 21 - Prob. 38PCh. 21 - An uncharged capacitor is connected to the...Ch. 21 - Prob. 40PCh. 21 - You need to construct a 100 pF capacitor for a...Ch. 21 - Prob. 42PCh. 21 - A switch that connects a battery to a 10 F...Ch. 21 - Prob. 44PCh. 21 - Initially, the switch in Figure P21 .33 is open...Ch. 21 - A 1.2 nF parallel-plate capacitor has an air gap...Ch. 21 - A 25 pF parallel-plate capacitor with an air gap...Ch. 21 - Prob. 48PCh. 21 - A science-fair radio uses a homemade capacitor...Ch. 21 - A parallel-plate capacitor is connected to a...Ch. 21 - A parallel-plate capacitor is charged by a 12.0 V...Ch. 21 - Prob. 52PCh. 21 - To what potential should you charge a 1.0 F...Ch. 21 - Prob. 54PCh. 21 - Capacitor 2 has half the capacitance and twice the...Ch. 21 - Prob. 56PCh. 21 - 50 pJ of energy is stored in a 2.0 cm 2.0 cm 2.0...Ch. 21 - Two uncharged metal spheres, spaced 15.0 cm apart,...Ch. 21 - A 2.0-cm-diameter parallel-plate capacitor with a...Ch. 21 - Prob. 60GPCh. 21 - A 50 nC charged particle is in a uniform electric...Ch. 21 - The 4000 V equipotential surface is 10.0 cm...Ch. 21 - Prob. 63GPCh. 21 - Two point charges 2.0 cm apart have an electric...Ch. 21 - A +3.0 nC charge is at x = 0 cm and a 1.0 nC...Ch. 21 - A 3.0 nC charge is on the x-axis at x = 9 cm and a...Ch. 21 - Prob. 67GPCh. 21 - Electric outlets have a voltage of approximately...Ch. 21 - A Na+ion moves from inside a cell, where the...Ch. 21 - Suppose that a molecular ion with charge 10e is...Ch. 21 - Prob. 71GPCh. 21 - a. What is the electric potential at point A in...Ch. 21 - Prob. 73GPCh. 21 - A proton follows the path shown in Figure P21.63....Ch. 21 - A parallel-plate capacitor is charged to 5000 V. A...Ch. 21 - A proton is released from rest at the positive...Ch. 21 - In the early 1900s, Robert Millikan used small...Ch. 21 - Two 2.0-cm-diameter disks spaced 2.0 mm apart form...Ch. 21 - In proton-beam therapy, a high-energy beam of...Ch. 21 - A 2.5-mm-diameter sphere is charged to 4.5 nC. An...Ch. 21 - A proton is fired from far away toward the nucleus...Ch. 21 - Prob. 82GPCh. 21 - Prob. 83GPCh. 21 - A capacitor consists of two 6.0-cm-diameter...Ch. 21 - The dielectric in a capacitor serves two purposes....Ch. 21 - The highest magnetic fields in the world are...Ch. 21 - The flash unit in a camera uses a special circuit...Ch. 21 - A Lightning Strike Storm clouds build up large...Ch. 21 - Prob. 89MSPPCh. 21 - A Lightning Strike Storm clouds build up large...Ch. 21 - A Lightning Strike Storm clouds build up large...Ch. 21 - A Lightning Strike Storm clouds build up large...
Additional Science Textbook Solutions
Find more solutions based on key concepts
C. Based on your observations of your tape segment and the tape segments of other members of your class, answer...
Tutorials in Introductory Physics
How does the total amount of energy coming from the Sun compare to the total amount of energy leaving Earth to ...
Lecture- Tutorials for Introductory Astronomy
Suppose a person has a 50—UB hearing loss at all frequencies. By how many factors of 10 will low—intensity soun...
College Physics
What simplifications were used to derive the formula for the period of vibration of an object at the end of a s...
College Physics
3. What is free-fall, and why does it make you weightless? Briefly describe why astronauts are weightless in th...
The Cosmic Perspective (8th Edition)
73. Why is there no atomosphere on the Moon? Defend your answer.
Conceptual Physical Science (6th 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
- A GeigerMueller tube is a radiation detector that consists of a closed, hollow, metal cylinder (the cathode) of inner radius ra and a coaxial cylindrical wire (the anode) of radius rb (Fig. P24.42a). The charge per unit length on the anode is , and the charge per unit length on the cathode is . A gas fills the space between the electrodes. When the tube is in use (for example, in measuring radioactivity from fruit in Fig. P24.42b) and a high-energy elementary particle passes through this space, it can ionize an atom of the gas. The strong electric field makes the resulting ion and electron accelerate in opposite directions. They strike other molecules of the gas to ionize them, producing an avalanche of electrical discharge. The pulse of electric current between the wire and the cylinder is counted by an external circuit. (a) Show that the magnitude of the electric potential difference between the wire and the cylinder is V2keln(rarb) (b) Show that the magnitude of the electric field in the space between cathode and anode is E=Vln(ra/rb)(1r) where r is the distance from the axis of the anode to the point where the field is to be calculated. Figure P24.42arrow_forwardThree capacitors having capacitances of 8.40, 8.40, and 4.20F , respectively, are connected in series across a 36.0-V potential difference. (a) What is the charge on the 4.20F capacitor? (b) The capacitors are disconnected from the potential difference without allowing them to discharge. They are then reconnected in parallel with each other with the positively charged plates connected together. What is the voltage across each capacitor in the parallel combination?arrow_forward(a) What voltage will accelerate electrons to a speed of 6.00107 m/s? (b) Find the radius of curvature of the path of a proton accelerated through this potential in a 0.500-T field and compare this with tire radius of curvature of an electron accelerated through the same potential.arrow_forward
- Unreasonable Results (a) What is the final speed of an electron accelerated from rest through a voltage of 25.0 MV by a negatively charged Van de Graaff terminal? (b) What is unreasonable about this result? (C) Which assumptions are responsible?arrow_forwardA bare helium nucleus has two positive charges and a mass of 6.641027kg . (a) Calculate its kinetic energy in joules at 2.00% of the speed of light, (b) What is this in electron-volts? (c) What voltage would be needed to obtain this energy?arrow_forwarda parallel-plate capacitor with area 0.200 m2 and plate separation of 3.00 mm is connected to a 6.00-V battery. (a) What is the capacitance? (b) How much charge is stored on the plates? (c) What is the electric field between the plates? (d) Find the magnitude of the charge density on each plate. (e) Without disconnecting the battery, the plates are moved farther apart. Qualitatively, what happens to each of the previous answers?arrow_forward
- Integrated Concepts (a) What voltage will accelerate electrons to a speed of 6.00107m/s ? (b) Find the radius of curvature of the path of a proton accelerated through this potential in a 0.500-T field and compare this with the radius of curvature of an electron accelerated through the same potential.arrow_forwardTwo parallel conducting plates are separated by 10.0 cm, and one of them is taken to be at zero volts, (a) What is the electric field strength between them, if the potential 8.00 cm from the zero volt plate (and 2.00 cm from the other) is 450 V? (b) What is the voltage between the plates?arrow_forwardTo form a helium atom, an alpha particle that contains two protons and two neutrons is fixed at one location, and two electrons are brought in from far away, one at a time. The first electron is placed at 0.6001010 m from the alpha particle and held there while the second electron is brought to 0.6001010 m from the alpha particle on the other side from the first electron. See die final configuration below, (a) How much work is done in each step? (b) What is the electrostatic energy of die alpha particle and two electrons in the final configuration?arrow_forward
- Voltage on a capacitor A capacitor is a device in an electrical circuit that stores charge. In one particular circuit, the charge on thecapacitor Q varies in time as shown in the figure.a. At what time is the rate of change of the charge Q′ the greatest?b. Is Q′ positive or negative for t > 0? c. Is Q′ an increasing or decreasing function of time(or neither)?d. Sketch the graph of Q′. You do not need a scale on the verticalaxis.arrow_forwardThe electric field strength between the plates of a simple air capacitor is equal to the voltage across the plates divided by the distance between them. When a kV voltage of 135. V is put across the plates of such a capacitor an electric field strength of 1.1 is measured. cm Write an equation that will let you calculate the distance d between the plates. Your equation should contain only symbols. Be sure you define each symbol. Your equation: d=0 Definitions of your symbols: kV = 1.1 cm 135. V Explanation Check 20 E A S tv Ⓒ2023 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Accessibarrow_forwardAn electron accelerates between the cathode and the anode. It passes through a potential difference of 2000 v. The charge on an electron is 1.6 × 10-19 C and the mass of an electron is 9.1 x 10-31 kg. Find the following: A. Describe what is happening to the atoms in the screen as they are hit by electrons. B. State the kinetic energy, in ev, of the electron when it hits the screen. C. Calculate the work done on the electron passing through a pd of 2000 V. Give your answer in joules. D. The work done on the electron becomes kinetic energy of the electron. Write down the formula for kinetic energy in terms of mass m and speed v. E. Using your answers to questions 3 and 4, find the speed of the electron. F. The anode is connected to the screen. State and explain what, if anything, happens to the speed of the electron as it passes from the anode to the screen. G. In 10 seconds, 6.0 × 10^17 electrons hit the screen. Calculate: (a) the charge hitting the screen in 10 seconds (the charge on…arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- College PhysicsPhysicsISBN:9781938168000Author:Paul Peter Urone, Roger HinrichsPublisher:OpenStax CollegePhysics for Scientists and Engineers with Modern ...PhysicsISBN:9781337553292Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
- Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningCollege PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningPhysics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage Learning
College Physics
Physics
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:OpenStax College
Physics for Scientists and Engineers with Modern ...
Physics
ISBN:9781337553292
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
Electric Fields: Crash Course Physics #26; Author: CrashCourse;https://www.youtube.com/watch?v=mdulzEfQXDE;License: Standard YouTube License, CC-BY