(a) An alpha particle (m=6.64 x 10-27 kg) contains two protons and two neutrons has no electrons to balance the positive charge of the two protons, hence it has a charge of +2. (Given charge of a proton is 1.6 x 10-19C). Assume one such alpha particle travels in a circular path of radius 29 cm in a uniform magnetic field of magnitude 1.5T. (i) What is the speed of the alpha particle ?

(a) An alpha particle (m=6.64 x 10-27 kg) contains two protons and two neutrons has no electrons to balance the positive charge of the two protons, hence it has a charge of +2. (Given charge of a proton is 1.6 x 10-19C). Assume one such alpha particle travels in a circular path of radius 29 cm in a uniform magnetic field of magnitude 1.5T. (i) What is the speed of the alpha particle ?

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter12: Sources Of Magnetic Fields

Section: Chapter Questions

Problem 25P: A long, straight, horizontal wire carries a left-to-right current of 20 A. If the wire is placed in...

See similar textbooks

Similar questions

A proton precesses with a frequency p in the presence of a magnetic field. If the intensity of the magnetic field is doubled, what happens to the precessional frequency?
An electron of kinetic energy 2000 eV passes between parallel plates that are 1.0 an apart and kept at a potential difference of 300 V. What is the strength of the uniform magnetic field B that will allow the electron to travel undeflected through the plates? Assume E and B are perpendicular.
A mass spectrometer (Fig. 30.40, page 956) operates with a uniform magnetic field of 20.0 mT and an electric field of 4.00 103 V/m in the velocity selector. What is the radius of the semicircular path of a doubly ionized alpha particle (ma = 6.64 1027 kg)?
A long, straight, horizontal wire carries a left-to-right current of 20 A. If the wire is placed in a uniform magnetic field of magnitude 4.0105 T that is directed vertically downward, what is tire resultant magnitude of the magnetic field 20 cm above the wire? 20 cm below the wire?
Is B constant in magnitude for points that lie on a magnetic field line?
Repeat the previous problem, but with the loop lying flat on the ground with its current circulating counterclockwise (when viewed from above) in a location where Earth’s field is north, but at an angle 45.0° below the horizontal and with a strength of 6.0105T.
Check Your Understanding In what orientation would a magnetic dipole have to be to produce (a) a maximum torque in a magnetic field? (b) A maximum energy of the dipole?
An electron is accelerated through 2.40 103 V from rest and then enters a uniform 1.70-T magnetic field. What are (a) the maximum and (b) the minimum values of the magnetic force this particle experiences?
An electron moves in a circular orbit of radius 94 cm, in an external magnetic field with velocity 2.75x106. (Given the mass of electron 9.11x10-27kg) Calculate the magnetic field strength in tesla?
An electron travels at the speed of 23 x 10^6 m/s in a circular radius and 37 degrees inclined about the nucleus. Determine the distance away, about the nucleus if the magnetic field is 2 T?
A proton moves in a circular orbit of radius 44 cm, in an external magnetic field with velocity 1.75x10. (Given the mass of proton 1.67x10-27kg) Calculate the magnetic field strength in tesla?
The uniform magnetic field present in the region is given as B = 4.45 ax + Byay, measured in milliteslas. Find the radius of curvature, in nanometers, if, at one instant, the velocity vector of the electron in the magnetic field is v = 9.74 ax - 4.06 ay, measured in meters per second, then it moves in a stationary circular path due to the magnetic field. Answer in 4 decimal places.