Derive a mathematical equation that calculates the speed at which DNA molecules move when placed inside a gel electrophoresis setup fixed at 100 V. Assume that the DNAmolecule is 1.0 kbp long in length and that the speed is inversely proportional to the friction coefficient f. How long should a gel be if you will run the experiment for the next half an hour in an agarose gel with f = 0.70?

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