I need help with these two problems: 1.- Determine the force exerted by a magnetic field of 2.4 x 10^-5 T on an electron which is moving at 3.9 m/s at a right angle to the field. 2.- What is the velocity of an electron receiving a force of 2.6 x 10^-20 N due to a field of 2.5 x 10^-4 T if they form a right angle to each other. Thanks for your help :) I will be grateful;)

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Q: a78

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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.