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1.) Find the rest energy of a neutral kaon, given its mass is 8.87 ✕ 10−28...

1.) Find the rest energy of a neutral kaon, given its mass is 8.87 ✕ 10−28 kg. Give your answer in joules.

Give your answer in MeV.

2.) On average, how far away are galaxies that are moving away from us at 2.7% of the speed of light? (Use 20 km/s · Mly for the Hubble constant.)

3.) Black holes with masses smaller than those formed in supernovas may have been created in the Big Bang. Calculate the radius of one that has a mass equal to the Earth's.

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