A ball with a mass of 110 g which contains 4.40x10 excess electrons is dropped into a vertical shaft with a height of 120 m. At the bottom of the shaft, the ball suddenly enters a uniform horizontal magnetic field that has a magnitude of 0.300 T and direction from east to west.

A ball with a mass of 110 g which contains 4.40x10 excess electrons is dropped into a vertical shaft with a height of 120 m. At the bottom of the shaft, the ball suddenly enters a uniform horizontal magnetic field that has a magnitude of 0.300 T and direction from east to west.

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...

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Concept explainers

Magnetic Field Of Coaxial Cable

The word coaxial means same axis. So for a long straight cable to be coaxial, it must have concentric cylindrical shaped conductor around it. Coaxial cable (popularly called ‘coax’) has various applications ranging from current conductors to radiofrequency signal transmitters. This cable has lower emission losses and provides protection from electromagnetic interference which allows signals with less power to transmit over longer distances.For example, currents produced in the pickup of a stereo turntable generally travel to the amplifier through a coaxial cable.The self-inductance of a coaxial cable is another important characteristic, because it influences the propagation of electrical signals in the cable.

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Constants
A ball with a mass of 110 g which contains 4.40x10° excess electrons
is dropped into a vertical shaft with a height of 120 m. At the bottom
of the shaft, the ball suddenly enters a uniform horizontal magnetic
field that has a magnitude of 0.300 T and direction from east to west.
Part A
If air resistance is negligibly small, find the magnitude of the force that this magnetic field exerts on the ball just as it enters the field.
Express your answer in newtons.
?
F =
N
Submit
Request Answer

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