A proton traveling at 28.4° with respect to the direction of a magnetic field of strength 1.97 mT experiences a magnetic force of 6.08 × 10´17 N. Calculate (a) the proton's speed and (b) its kinetic energy in electron-volts.

A proton traveling at 28.4° with respect to the direction of a magnetic field of strength 1.97 mT experiences a magnetic force of 6.08 × 10´17 N. Calculate (a) the proton's speed and (b) its kinetic energy in electron-volts.

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter22: Magnetic Forces And Magnetic Fields

Section: Chapter Questions

Problem 4P

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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.

Question

The question is attached below, I know I'm using everything right but it says the final answer is wrong for the second part. Thanks

A proton traveling at 28.4° with respect to the direction of a magnetic field of strength 1.97 mT
experiences a magnetic force of 6.08 × 10-17 N. Calculate (a) the proton's speed and (b) its kinetic
energy in electron-volts.
(a) Number
405558.4164
Units
m/s
(b) Number
i 858.365
Units
eV

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