A 7 kg particle carrying a charge of 79μ C enters a uniform 8.7 T magnetic field at a speed of 60 m/s and with an angle of 52 degrees with respect to the field lines, as shown in the figure. Select all the statements that are true. If none of them are true, select "None of the above." Note: There is a difference between a circle and a helix. A. The y-component of the particle's velocity is unchanged as it passes through the magnetic field. B. The particle's speed is unchanged as it passes through the magnetic field. C. The field does a finite, nonzero amount of work on the particle as the particle's trajectory is bent by the field. D. The particle follows a circular path as the force is normal to the velocity. E. The initial force on the particle is in the -z direction. F. None of the above.

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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.