An electron is circling in a uniform magnetic field. The mass of an electron is 9.11e-31kg, and its charge is 1.6e-19C. What is the radius (in m) of the electrons motion if the tangential speed of the electron is 6.22e7m/s and the strength of the magnetic field is 2.53 tesla?

An electron is circling in a uniform magnetic field. The mass of an electron is 9.11e-31kg, and its charge is 1.6e-19C. What is the radius (in m) of the electrons motion if the tangential speed of the electron is 6.22e7m/s and the strength of the magnetic field is 2.53 tesla?

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter11: Magnetic Forces And Fields

Section: Chapter Questions

Problem 31P: An alpha-particle ( m=6.641027kg , q=3.21019C ) travels in a circular path of radius 25 cm in a...

See similar textbooks

Similar questions

The magnetic field in a cyclotron is 1.25 T, and the maximum orbital radius of the circulating protons is 0.40 m. (a) What is the kinetic energy of the protons when they are ejected from the cyclotron? (b) What Is this energy in MeV? (c) Through what potential difference would a proton have to be accelerated to acquire this kinetic energy? (d) What is the period of tire voltage source used to accelerate the piotons? (e) Repeat tire calculations for alpha-particles.
(a) An oxygen16 ion with a mass at 2.661026kg travels at 5.00106m/s perpendicular to a 1.20T magnetic field, which makes it move in a circular arc with a 0.231-m radius. What positive charge is on the ion? (b) What is the radio of this charge to the charge of an electron? (c) Discuss why the radio found in (b) should be an integer.
A spacecraft is in 4 circular orbit of radius equal to 3.0 104 km around a 2.0 1030 kg pulsar. The magnetic field of the pulsar at that radial distance is 1.0 102 T directed perpendicular to the velocity of the spacecraft. The spacecraft is 0.20 km long with a radius of 0.040 km and moves counter-clockwise in the xy-plane around the pulsar. (a) What is the speed of the spacecraft? (b) If the magnetic field points in the positive z-direction, is the emf induced from the back to the front of the spacecraft or from side to side? (c) Compute the induced emf. (d) Describe the hazards for astronauts inside any spacecraft moving in the vicinity of a pulsar.
An electron in a TV CRT moves with a speed of 6.0107 m/s, in a direction perpendicular to Earth's field, which has a strength of 5.0105 T. (a) What strength electric field must be applied perpendicular to the Earth’s field to make the election moves in a straight line? (b) If this is done between plates separated by 1.00 cm, what is the voltage applied? (Note that TVs are usually surrounded by a ferromagnetic material to shield against external magnetic fields and avoid the need for such a collection,)
At a particular instant an electron is traveling west to east with a kinetic energy of 10 keV. Earth's magnetic field has a horizontal component of 1.8105 T north and a vertical component of 5.0105 T down. (a) What is the path of the election? (b) What is the radius of curvature of the path?
A particle moving downward at a speed of 6.0106 m/s enters a uniform magnetic field that is horizontal and directed from east to west. (a) If the particle is deflected initially to the north in a circular arc, is its charge positive or negative? (b) If B = 0.25 T and the charge-to-mass ratio (q/m) of the particle is 40107 C/kg. what is ±e radius at the path? (c) What is the speed of the particle after c has moved in the field for 1.0105s ? for 2.0s?
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?
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?
An electron has a mass of 9.11×10^-31 kg and a charge of -1.60×10^-19 C it moves in a magnetic field of strength 5.00×10^-4 T in a circle at a velocity of 2.00×10^6 m/s what is the radius of the circle.
A negative charge, q = -7.2 nC follows a circular path due to the force caused by the magnetic field. If the magnetic field, B = 4.1 T causes charge to follow a radius of r = 3.2 µm, how fast (v = ?), in m/s, does the charge move? The mass of the charge is 5.56 x 10^-22 kg. Disregard any effects caused by special relativity.
H1. 2. A proton moving at right angles to a magnetic field of 0.100T travels in a circular orbit of radius 5.00cm. The proton has an electric charge q = 1.60×10-19C and a mass of 1.67×10-27kg. (a) What is the speed of the proton? (b) What is its kinetic energy?
What is the magnitude of the force on an electron (q = - 1.6x10-19 C) moving with a velocity v = 5.43 x 106 m/s at an angle = 53.4 with respect to a magnetic field B = 7.72 x 10-2 T?