Estimates: since the force it takes to separate one magnet from your refrigerator is nearly the same as the force it takes to separate two magnets stuck together, that force F is 5 N and the area of a refrigerator magnet is 8 cm? Assume that when these magnets are stuck together or to the refrigerator, they are separated by an effective distance d = 25 um. Use the formula derived above to estimate the magnetic field strength of the magnet.

Estimates: since the force it takes to separate one magnet from your refrigerator is nearly the same as the force it takes to separate two magnets stuck together, that force F is 5 N and the area of a refrigerator magnet is 8 cm? Assume that when these magnets are stuck together or to the refrigerator, they are separated by an effective distance d = 25 um. Use the formula derived above to estimate the magnetic field strength of the magnet.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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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.

Question

Estimates: since the force it takes to separate one magnet from your refrigerator is nearly the same as the force it takes to separate two magnets stuck together, that
force F is 5 N and the area of a refrigerator magnet is 8 cm?.
Assume that when these magnets are stuck together or to the refrigerator, they are separated by an effective distance d = 25 um. Use the formula derived above to
estimate the magnetic field strength of the magnet.
Express your answer to one significant figures and include the appropriate units.

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