Flow speed, electric generator, and mass spectrometer: Putting it all together
Blood flow meter A blood flow meter measures a potential difference of 8.0 x 10-5 V across a vessel of diameter 4.0 x 10-3 m. (a) Determine the magnitude of the electric force exerted on an ion of charge 1.6 x 10-19 C. (b) At what speed must the ion move so that the electric force is balanced by the magnetic force exerted by a 0.040-T field oriented perpendicular to the flow direction?
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