Need help with these two questions . A conductor of mass 40,0 grams per meter is hung by two wires in a 3.60 T field directed out of thepage as shown.ンイインンSource ASource Ba. Which source, A or B, should be switched on so that the magnetic field will deflect the wireupward, helping balance the conductor's weight? Explain. (ans: Source B-why?)b. How much current from the source would be needed so that the conductor would levitate,reducing the tension in the wires to zero? (ans: 0.11A)12. A proton in the solar wind travels perpendicularly at 3.00x10 m/s across the Earth's magnetic fieldlines. The field at that location is 0.0000100 T.Determine the magnitude of the magnetic force that will deflect the proton. (ans: 4.8 x 1019 N)a.b. Since this force acts at right angles to its velocity, the proton will experience this as acentripetal force, causing the proton to have a "corkscrew" circular motion. Calculate theradius of these circles as the proton travels through the field. (ans: 313 m)2020-12-11Page 10 of 17

11. A conductor of mass 40,0 grams per meter is hung by two wires in a 3.60 T field directed out of the page as shown. Source A Source B' a. Which source, A or B, should be switched on so that the magnetic field will deflect the wire upward, helping balance the conductor's weight? Explain. (ans: Source B-why?) b. How much current from the source would be needed so that the conductor would levitate, reducing the tension in the wires to zero? (ans: 0.11A)

11. A conductor of mass 40,0 grams per meter is hung by two wires in a 3.60 T field directed out of the page as shown. Source A Source B' a. Which source, A or B, should be switched on so that the magnetic field will deflect the wire upward, helping balance the conductor's weight? Explain. (ans: Source B-why?) b. How much current from the source would be needed so that the conductor would levitate, reducing the tension in the wires to zero? (ans: 0.11A)

Physics for Scientists and Engineers with Modern Physics

10th Edition

ISBN:9781337553292

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter28: Magnetic Fields

Section: Chapter Questions

Problem 26P: Consider the system pictured in Figure P28.26. A 15.0-cm horizontal wire of mass 15.0 g is placed...

See similar textbooks

Similar questions

A circular coil with 200 turns Las a radius of 2.0 cm. (a) What current through tire coil results in a magnetic dipole moment of 3.0 Am2? (b) What is the maximum torque that the coil will experience in a uniform field of strength 5.0102 ? (c) If tire angle between and B is 45°, what is the magnitude of tire torque on the coil? (d) What is the magnetic potential energy of coil for this orientation?
An alpha-particle ( m=6.641027kg , q=3.21019C ) travels in a circular path of radius 25 cm in a uniform magnetic field of magnitude 1.5 T. (a) What is the speed of the particle? (b) What is the kinetic energy in electron-volts? (c) Through what potential difference must the particle be accelerated in order to give it this kinetic energy?
Unreasonable results Frustrated by the small Hall voltage obtained in blood flow measurements, a medical physicist decides to increase the applied magnetic field strength to get a 0.500-V output for blood moving at 30.0 cm/s in a 1.50-cm-diameter vessel. (a) What magnetic field strength is needed? (b) What is unreasonable about this result? (C) Which premise is responsible?
The square armature coil of an alternating current generator has 200 turns and is 20.0 cm on side. When it rotates at 3600 rpm, its peak output voltage is 120 V. (a) Wliat is the frequency' of the output voltage? (b) What is the strength of the magnetic field in which the coil is turning?
A square loop whose sides are 6.0-cm long is made with copper wire of radius 1.0 mm. If a magnetic field perpendicular to the loop is changing at a rate of 5.0 mT/s, what is the current in the loop?
The current density in the long, cylindrical wire shown in the accompanying figure varies with distance r from the center of the wire according to J = cr. where c is a constant (a) What is the current through the wire? (b) What is the magnetic field produced by this current for r < R? For rR ?
(a) What is the speed of a supersonic aircraft with a 17.0-m wingspan, if it experiences a 1.60V Hall voltage between its wing lips when in level flight over the north magnetic pole, where the Earth's field strength is 8.00105T ? (b) Explain why very little current flows as a result of this Hall voltage.
Consider the system pictured in Figure P28.26. A 15.0-cm horizontal wire of mass 15.0 g is placed between two thin, vertical conductors, and a uniform magnetic field acts perpendicular to the page. The wire is free to move vertically without friction on the two vertical conductors. When a 5.00-A current is directed as shown in the figure, the horizontal wire moves upward at constant velocity in the presence of gravity. (a) What forces act on the horizontal wire, and (b) under what condition is the wire able to move upward at constant velocity? (c) Find the magnitude and direction of the minimum magnetic Field required to move the wire at constant speed. (d) What happens if the magnetic field exceeds this minimum value? Figure P28.26
(a) A 0.750-m-long section of cable carrying current to a car starter motor makes an angle at 60° with the Earth’s 5.00105-T field. What is the current when the wire experiences a force of 7.00103N ? (b) If you run the wire between the poles of a strong horseshoe magnet, subjecting 5.00 cm of it to a 1.75T field, what force is exerted on this segment of wire?
Two flat, circular coils, each with a radius R and wound with JV turns, ace mounted along the same axis so that they are parallel a distance d apart. What is the magnetic field at the midpoint of the common axis if a current I flows in the same direction through each coil?
A toroid with a square cross section 3.0cm3.0cm has an inner radius of 25.0 cm. It is wound with 500 turns of wire, and it carries a current of 2.0 A. What is the strength of the magnetic field at the center of the square cross section?
Unreasonable results A charged particle having mass 6.641027kg (that of a helium atom) moving at 8.70105m/s perpendicular to a 1.50-T magnetic field travels in a circular path of radius 16.0 mm. (a) What is the charge of the particle? (b) What is unreasonable about this result? (c) Which assumptions are responsible?