PHYSICS F/SCI.+ENGINEERS-ACCESS
4th Edition
ISBN: 9780131992269
Author: GIANCOLI
Publisher: PEARSON
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Question
Chapter 27, Problem 18P
To determine
Velocity of the electron beam and radius of the electron orbit.
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Chapter 27 Solutions
PHYSICS F/SCI.+ENGINEERS-ACCESS
Ch. 27.1 - Prob. 1AECh. 27.2 - Prob. 1BECh. 27.3 - A wire carrying current I is perpendicular to a...Ch. 27.3 - A straight power line carries 30A and is...Ch. 27.4 - Prob. 1EECh. 27.4 - What is the sign of the charge in Fig. 2719? How...Ch. 27.4 - A particle in a velocity selector as diagrammed in...Ch. 27 - A compass needle is not always balanced parallel...Ch. 27 - Prob. 2QCh. 27 - A horseshoe magnet is held vertically with the...
Ch. 27 - In the relation F=IlB, which pairs of the vectors...Ch. 27 - The magnetic field due to current in wires in your...Ch. 27 - If a negatively charged particle enters a region...Ch. 27 - In Fig. 2734, charged particles move in the...Ch. 27 - A positively charged particle in a nonuniform...Ch. 27 - Note that the pattern of magnetic field lines...Ch. 27 - Explain why a strong magnet held near a CRT...Ch. 27 - Describe the trajectory of a negatively charged...Ch. 27 - Can you set a resting electron into motion with a...Ch. 27 - A charged particle is moving in a circle under the...Ch. 27 - The force on a particle in a magnetic field is the...Ch. 27 - A beam of electrons is directed toward a...Ch. 27 - A charged particle moves in a straight line...Ch. 27 - If a moving charged particle is deflected sideways...Ch. 27 - How could you tell whether moving electrons in a...Ch. 27 - How can you make a compass without using iron or...Ch. 27 - Prob. 20QCh. 27 - In what positions (if any) will a current loop...Ch. 27 - A rectangular piece of semiconductor is inserted...Ch. 27 - Two ions have the same mass, but one is singly...Ch. 27 - (I) (a) What is the force per meter of length on a...Ch. 27 - (I) Calculate the magnitude of the magnetic force...Ch. 27 - (I) A 1.6-m length of wire carrying 4.5 A of...Ch. 27 - (II) The magnetic force per meter on a wire is...Ch. 27 - (II) The force on a wire is a maximum of 7.50 102...Ch. 27 - (II) Suppose a straight 1.00-mm-diameter copper...Ch. 27 - Prob. 7PCh. 27 - (II) A long wire stretches along the x axis and...Ch. 27 - (II) A current-carrying circular loop of wire...Ch. 27 - (II) A 2.0-m-long wire carries a current of 8.2 A...Ch. 27 - Prob. 11PCh. 27 - (III) A circular loop of wire, of radius r,...Ch. 27 - (I) Determine the magnitude and direction of the...Ch. 27 - (I) An electron is projected vertically upward...Ch. 27 - (I) Alpha particles of charge q = +2e and mass m =...Ch. 27 - (I) Kind the direction of the force on a negative...Ch. 27 - (I) Determine the direction of B for each ease in...Ch. 27 - Prob. 18PCh. 27 - (II) A doubly charged helium atom whose mass is...Ch. 27 - (II) A proton (mass mp), a deuteron (m = 2mp, Q =...Ch. 27 - (II) For a particle of mass m and charge q moving...Ch. 27 - (II) An electron moves with velocity...Ch. 27 - (II) A 6.0-MeV (kinetic energy) proton enters a...Ch. 27 - (II) An electron experiences the greatest force as...Ch. 27 - (II) A proton moves through a region of space...Ch. 27 - (II) An electron experiences a force...Ch. 27 - (II) A particle of charge q moves in a circular...Ch. 27 - (II) An electron enters a uniform magnetic field B...Ch. 27 - Prob. 29PCh. 27 - (II) The path of protons emerging from an...Ch. 27 - (III) Suppose the Earths magnetic field at the...Ch. 27 - Prob. 32PCh. 27 - (III) A proton moving with speed = 1.3 105 m/s...Ch. 27 - (III) A particle with charge +q and mass m travels...Ch. 27 - (I) How much work is required to rotate the...Ch. 27 - (I) A 13.0-cm-diameter circular loop of wire is...Ch. 27 - (II) A circular coil 18.0 cm in diameter and...Ch. 27 - (II) Show that the magnetic dipole moment of an...Ch. 27 - (II) A 15-loop circular coil 22 cm in diameter...Ch. 27 - (III) Suppose a nonconducting rod of length d...Ch. 27 - (I) If the current to a motor drops by 12%, by...Ch. 27 - (I) A galvanometer needle deflects full scale for...Ch. 27 - (I) If the restoring spring of a galvanometer...Ch. 27 - Prob. 44PCh. 27 - (II) An oil drop whose mass is determined to be...Ch. 27 - (II) A Hall probe, consisting of a rectangular...Ch. 27 - (II) A Hall probe used to measure magnetic field...Ch. 27 - (II) A rectangular sample of a metal is 3.0 cm...Ch. 27 - (II) In a probe that uses the Hall effect to...Ch. 27 - Prob. 50PCh. 27 - Prob. 51PCh. 27 - (II) One form of mass spectrometer accelerates...Ch. 27 - (II) Suppose the electric field between the...Ch. 27 - (II) A mass spectrometer is being used to monitor...Ch. 27 - (II) An unknown particle moves in a straight line...Ch. 27 - Protons move in a circle of radius 5.10 cm in a...Ch. 27 - Protons with momentum 3.8 1016 kg m/s are...Ch. 27 - A proton and an electron have the same kinetic...Ch. 27 - Prob. 59GPCh. 27 - Prob. 60GPCh. 27 - Near the equator, the Earths magnetic field points...Ch. 27 - Calculate the magnetic force on an airplane which...Ch. 27 - A motor run by a 9.0-V battery has a 20 turn...Ch. 27 - Estimate the approximate maximum deflection of the...Ch. 27 - Prob. 65GPCh. 27 - The cyclotron (Fig. 2750) is a device used to...Ch. 27 - Magnetic fields are very useful in particle...Ch. 27 - A square loop of aluminum wire is 20.0 cm on a...Ch. 27 - A sort of projectile launcher is shown in Fig....Ch. 27 - Prob. 70GPCh. 27 - In a certain cathode ray tube, electrons are...Ch. 27 - Prob. 72GPCh. 27 - A proton follows a spiral path through a gas in a...Ch. 27 - Prob. 74GPCh. 27 - The power cable for an electric trolley (Fig....Ch. 27 - A uniform conducting rod of length d and mass m...Ch. 27 - In a simple device for measuring the magnitude B...
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- A beam of electrons is accelerated through a potential difference of 10 kV before entering a region having uniform eletric and magnetic fields that are perpendicular to eah other and perpendicular to the direction in which the electron is moving. If the magnetic field in this region has a value of 0.010T calculate the magnitude of the eletric field is required if the particles are to be underflected as they pass through the region.arrow_forwardCheck Your Understanding What is if v=0.650c?arrow_forwardCosmic rays are high-energy charged particles produced by astronomical objects. Many of the cosmic rays that make their way to the Earth are trapped by the Earths magnetic field and never reach the surface. These trapped cosmic rays are found in the Van Allen beltsdonut-shaped zones over the Earths equator (Fig. 30.34). These cosmic rays are mostly protons with energies of about 30 MeV. The inset in the figure shows a cosmic ray proton as it is about to enter the Earths magnetic field. The cosmic rays velocity is initially perpendicular to the field. Three students discuss what happens to the incoming cosmic ray. Decide which student or students are correct. Figure 30.34 The Van Allen belts are donut-shaped zones of trapped cosmic rays above the Earths surface. Inset: What happens to this cosmic ray as it enters the Earths magnetic field? Shannon: The velocity is perpendicular to the magnetic field, so the cosmic ray just passes through the field and hits the Earths atmosphere. Avi: What you are saying is that the magnetic field exerts no force on the cosmic ray. Actually, it exerts a huge force because the velocity is perpendicular to the magnetic field. The force will be into the page. Cameron: Avi is right. The cosmic ray proton is going to feel a huge magnetic force. Because it is positively charged, it will be pushed upward along the magnetic field lines. Shannon: I never said the force was zero. There is a force, but the force is perpendicular to the magnetic field lines. In this case, thats to the lefttoward the Earth. Avi: The force is perpendicular to the magnetic field, but it also has to be perpendicular to the velocity. Because B and v are both in the plane of the page, the force must be perpendicular to the page.arrow_forward
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