College Physics: Explore And Apply, Volume 2 (2nd Edition)
2nd Edition
ISBN: 9780134862910
Author: Eugenia Etkina, Gorazd Planinsic, Alan Van Heuvelen, Gorzad Planinsic
Publisher: PEARSON
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Textbook Question
Chapter 20, Problem 20CQ
A beam of electrons is not deflected as it moves through a region of space in which a magnetic field exists. Give two explanations why the electrons might move along a straight path.
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College Physics: Explore And Apply, Volume 2 (2nd Edition)
Ch. 20 - Review Question 20.1 What aspects of compass...Ch. 20 - Review Question 20.2 What is the direction of the...Ch. 20 - Review Question 20.3 Equation (20.2) defines the...Ch. 20 - Review Question 20.4 If the magnetic force is...Ch. 20 - Review Question 20.5 The definition of a 1-A...Ch. 20 - Review Question 20.6 What is the difference...Ch. 20 - Review Question 20.7 Why is there a difference in...Ch. 20 - You place a metal bar magnet on a swivel and bring...Ch. 20 - 2. An electron moves at constant speed from left...Ch. 20 - 3. What is one tesla?
a.
b.
c.
d. All of the...
Ch. 20 - Choose all that apply. Objects that produce...Ch. 20 - 5. What is one difference between magnetic and...Ch. 20 - 6. Two parallel straight current-carrying wires...Ch. 20 - 7. Choose all of the units that are fundamental,...Ch. 20 - 8. Particles of various masses, charges, and...Ch. 20 - When a diamagnetic material Is placed in an...Ch. 20 - If you triple the speed of a particle entering a...Ch. 20 - In 1911 physicists measured a magnetic field...Ch. 20 - Describe two experiments that will allow you to...Ch. 20 - How can you determine if there is a magnetic field...Ch. 20 - You have a magnet on which the poles are not...Ch. 20 - 15. List as many ways as you can to detect a...Ch. 20 - Prob. 16CQCh. 20 - Prob. 17CQCh. 20 - An electron flies through the magnetic field shown...Ch. 20 - Prob. 19CQCh. 20 - 20. A beam of electrons is not deflected as it...Ch. 20 - 21 A beam of electrons moving toward the east is...Ch. 20 - 22. Why are residents of northern Canada less...Ch. 20 - Prob. 23CQCh. 20 - An electron enters a solenoid at a small angle...Ch. 20 - Two parallel wires carry electric current in the...Ch. 20 - Prob. 26CQCh. 20 - Describe a situation in which an electron will be...Ch. 20 - When a switch is closed a compass needle deflects...Ch. 20 - 2. You have a lightbulb connected to a battery....Ch. 20 - 3 The current through a circuit is shown in Figure...Ch. 20 - 4. Draw field lines for the magnetic field...Ch. 20 - 5. * You need to determine the direction of the ...Ch. 20 - 6.* Two compass needles are fixed at the ends of a...Ch. 20 - 7. * In Houston, Earth’s field has a magnitude of...Ch. 20 - * A 15-g 10-cm-long wire is suspended horizontally...Ch. 20 - Prob. 9PCh. 20 - * A metal rod is connected to a battery through...Ch. 20 - * After you turned on the current in the circuit...Ch. 20 - 13. ** A square coil with 30 turns has sides that...Ch. 20 - * (a) Determine the magnetic force (magnitude and...Ch. 20 - 16. * A 500-turn square coil of wire is hinged to...Ch. 20 - * Electric motor 1 An electric motor has a square...Ch. 20 - 18. ** You make a seesaw by placing a 50-g magnet...Ch. 20 - * Electric motor 2 An electric motor has a...Ch. 20 - 20. Each of the lettered dots a-d shown In Figure...Ch. 20 - Duck gets a lift A duck accumulates a positive...Ch. 20 - 22. An electron of mass kg moves horizontally...Ch. 20 - A 1000-kg car moves west along the equator. At...Ch. 20 - * BIO Magnetic force exerted by Earth on ions in...Ch. 20 - 105m/s. Design a magnetic shield that will deflect...Ch. 20 - s magnetic field.Ch. 20 - 27. * An electron and a proton, moving side by...Ch. 20 - An east-west electric power line carries a 500-A...Ch. 20 - * Pigeons A solenoid of radius 1.0 m with 750...Ch. 20 - * A horizontal current-carrying wire that is...Ch. 20 - Prob. 31PCh. 20 - field inside a long solenoid is given by the...Ch. 20 - * Electron current and magnetic field in H atom In...Ch. 20 - * Two long, parallel wires are separated by 2.0 m....Ch. 20 - * Minesweepers During World War II, explosive...Ch. 20 - 40. An electron moves at the speed of toward the...Ch. 20 - * Mass spectrometer A mass spectrometer has a...Ch. 20 - 42. * Mass spectrometer 2 One type of mass...Ch. 20 - 43. * An ion with charge C moves at speed m/s...Ch. 20 - * A box has either an electric field or a magnetic...Ch. 20 - 45. ** A piece of wire, shown in Figure P20.45 ,...Ch. 20 - 46. ** EST Particles in cosmic rays are mostly...Ch. 20 - BIO Magnetic resonance imaging In magnetic...Ch. 20 - BIO Magnetic resonance imaging In magnetic...Ch. 20 - BIO Power lines—do their magnetic fields pose a...Ch. 20 - BIO Magnetic resonance imaging In magnetic...Ch. 20 - BIO Magnetic resonance imaging In magnetic...Ch. 20 - BIO Magnetic resonance imaging In magnetic...Ch. 20 - BIO Power linesdo their magnetic fields pose a...Ch. 20 - BIO Power linesdo their magnetic fields pose a...Ch. 20 - BIO Power linesdo their magnetic fields pose a...Ch. 20 - BIO Power linesdo their magnetic fields pose a...Ch. 20 - BIO Power linesdo their magnetic fields pose a...
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- What magnetic field is required in order to confine a proton moving with a speed of 4.0 × 106 m/s to a circular orbit of radius 10 cm?arrow_forwardA proton moving in the plane of the page has a kinetic energy of 6.00 MeV. A magnetic field of magnitude H = 1.00 T is directed into the page. The proton enters the magnetic field with its velocity vector at an angle = 45.0 to the linear boundary of' the field as shown in Figure P29.80. (a) Find x, the distance from the point of entry to where the proton will leave the field. (b) Determine . the angle between the boundary and the protons velocity vector as it leaves the field.arrow_forwardA cosmic-ray proton in interstellar space has an energy of 10.0 MeV and executes a circular orbit having a radius equal to that of Mercury’s orbit around the Sun (5.80 × 1010 m). What is the magnetic field in that region of space?arrow_forward
- A proton (charge + e, mass mp), a deuteron (charge + e, mass 2mp), and an alpha particle (charge +2e, mass 4mp) are accelerated from rest through a common potential difference V. Each of the particles enters a uniform magnetic field B, with its velocity in a direction perpendicular to B. The proton moves in a circular path of radius rp. In terms of rp, determine (a) the radius rd of the circular orbit for the deuteron and (b) the radius ra for the alpha particle.arrow_forwardElectrons in Earths upper atmosphere have typical speeds near 6.00 105 m/s. (a) Calculate the magnitude of Earths magnetic field if an electrons velocity is perpendicular to the magnetic field and its circular path has a radius of 7.00 102 m. (b) Calculate the number of times per second that an electron circles around a magnetic field line.arrow_forwardTwo ions are accelerated from rest in a mass spectrometer operating with potential difference V. The first ion, with mass m1, is singly ionized and is deflected into a semicircle of radius R1 by the uniform magnetic field in the mass spectrometer. A second, doubly-ionized ion with mass m2 is deflected into a semicircle with twice the radius of the first ion. What is the ratio m2/m1?arrow_forward
- A thin copper rod 1.00 m long has a mass of 50.0 g. What is the minimum current in the rod that would allow it to levitate above the ground in a magnetic field of magnitude 0.100 T? (a) 1.20 A (b) 2.40 A (c) 4.90 A (d) 9.80 A (e) none of those answersarrow_forwardWhy is the following situation impossible? Figure P28.46 shows an experimental technique for altering the direction of travel for a charged particle. A particle of charge q = 1.00 C and mass m = 2.00 1015 kg enters the bottom of the region of uniform magnetic field at speed = 2.00 105 m/s, with a velocity vector perpendicular to the field lines. The magnetic force on the particle causes its direction of travel to change so that it leaves the region of the magnetic field at the top traveling at an angle from its original direction. The magnetic field has magnitude B = 0.400 T and is directed out of the page. The length h of the magnetic field region is 0.110 m. An experimenter performs the technique and measures the angle at which the particles exit the top of the field. She finds that the angles of deviation are exactly as predicted. Figure P28.46arrow_forwardAn electron moves in a circular path perpendicular to a constant magnetic field of magnitude 1.00 mT. The angular momentum of the electron about the center of the circle is 4.00 1025 kg m2/s. Determine (a) the radius of the circular path and (b) the speed of the electron.arrow_forward
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