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Certain theories predict that the proton is unstable, with a half-life of about 10^32 years. Assuming that this is true, calculate the number of proton decays you would expect to occur in one year in the water of an Olympic-sized swimming pool holding 4.32 x 10^5 of water.
Please show solutions and answer to the problem.
A boat takes 4h to travel down a 30km river, then 6.0h to return. How fast is the river flowing
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