Physics
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A particle accelerator uses magnetic fields to accelerate a beam of protons for high-energy collisions. In one of the experiments, a small number of protons hit the target, but the majority passed through and hit a beam stopper. The beam stopper measured a charge accumulating at a rate of 1.5 nC/s. If the experiment lasted for 3.0 hours, how many protons have been accumulated in the stopper?