Grand unification theories predict that the proton has a
Chapter , Problem 10(choose chapter or problem)
Grand unification theories predict that the proton has a long but finite lifetime. Current experiments based on detecting the decay of protons in water infer that this lifetime is at least years. Assume years is, in fact, the mean lifetime of the proton. Estimate the expected time between proton decays that occur in the water of a filled Olympic-size swimming pool. An Olympic-size swimming pool is Give your answer in days.
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