(a)Suppose that a molecular ion with charge -10e is embedded within the 5.0-nm-thick cell membrane of a cell with membrane potential -70 mV. What is the electric force on the molecule? (b) A proton is released from rest at the positive plate of a parallel- plate capacitor. It crosses the capacitor and reaches the negative plate with a speed of 50,000 m/s. What will be the protons final speed if the experiment is repeated with double the amount of charge on each capacitor plate?
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