49. There is a uniform magnetic field of 0.50 T directed along the positive y-axis. (A) Determine the force exerted on a 4.0-A current in a 3.0-m long wire heading along the negative z-axis. (B) Determine the force on a 200-µC charge moving 60 km/s at an angle of 30° below the +x-axis. (C) In which direction(s) could a proton travel and experience zero magnetic force?

49. There is a uniform magnetic field of 0.50 T directed along the positive y-axis. (A) Determine the force exerted on a 4.0-A current in a 3.0-m long wire heading along the negative z-axis. (B) Determine the force on a 200-µC charge moving 60 km/s at an angle of 30° below the +x-axis. (C) In which direction(s) could a proton travel and experience zero magnetic force?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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8. A charged particle moves in a horizontal plane with a speed of 8 70 106 . × m / s. When this particleencounters a uniform magnetic field in the vertical direction it begins to move on a circular path of radius15.9 cm. (a) If the magnitude of the magnetic field is 1.21 T, what is the charge-to-mass ratio (q/m) ofthis particle?
1. An electron moves west at 6.9 x 105 m/s through a magnetic field directed [W75°N] with strength of 1.3 x 102 T. What magnitude and direction would the electron experience a magnetic force?
1. A particle of charge -6.25nC experiences a force of 1.25 N when it is moving at 3.75 X 104m/s. Its motion is perpendicular to the magnetic field produced by a current–carrying wire, which is 3.0 cm from it. (a) What is the magnitude of the magnetic field? (b) How much current flows through the wire?
What force is felt by a 8.0 nC charge moving at a velocity of 5.0 × 104 m/s at an angle of 50° to a constant magnetic field of 7.0 × 10-4 T?
9. A electron with charge -1.60 × 10-19 C and mass 9.11 × 10-31 kg is accelerated from rest through 14.20 kV. It then enters a uniform magnetic field of 7.50 x 10-4 T that is oriented perpendicular to its direction of motion. (a) What is the radius of the path the electron follows in the magnetic field? (b) How long does it take the electron to make one complete circle in the magnetic field?
49.
2) At the instant an electron enters a uniform magnetic field of 0.700 T directed along the positive x-axis, its velocity has the following components: vx= 4.00 x 10^6 m/s , vy= 0, vz=5.00 x 10^6 Find the radius and pitch of the helical path followed by the electron.
3. A proton moving at speęd 4.00x10° m/s and angle e through a magnetic field of magnitude 1.70 T. The proton experiences a magnetic force of magnitude 8.20x1013 'N. What is the angle between the proton's velocity and the magnetic field? NOTE: qproton=1.6x10-19 C a) O 58.7° 38.9° b) O c)o 68.9 ° 35.3° d) O e) O 48.9 ° Leave blank
53. A wire is formed into a circle having a diameter of w 10.0 cm and is placed in a uniform magnetic field of 3.00 mT. The wire carries a current of 5.00 A. Find (a) the maximum torque on the wire and (b) the of potential energies of the wire-field system for differ- range ent orientations of the circle.
8. In an experiment with cosmic rays, a vertical beam of particles that have charge of magnitude 3e and mass 12 times the proton mass enters a uniform horizontal magnetic field of 0.250 T and is bent in a semicircle of diameter 95.0 cm. Find the my speed of the particles and the sign of their charge. (Hint: R= Magnitude of charge of electron e = 1.6021765651352 * 10" C, Mass of proton m₂ = 1.6726217771742 * 10 kg) (10') 98² 95.0 cm
b. Another wire is placed at position x=0.70m and oriented along the y−axis. A switch is turned on and a current of 3.0 A flows in the direction of the +y−axis. If the -3.0 C charge is initially moving with a speed of 6.0 m/s in the direction of 30∘ counterclockwise from the +x−axis in the xy−plane, what is the magnetic force on the charge? Question A has already been answered! I just need the answer for question b :)
7. An electron is accelerated through 2.40 × 103 V from w rest and then enters a uniform 1.70-T magnetic field. What are (a) the maximum and (b) the minimum val- ues of the magnetic force this particle experiences? volocityI of =