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An unstable nucleus has a half-life of 1 ms. We prepare a beam of such particles...

An unstable nucleus has a half-life of 1 ms. We prepare a beam of such particles and want at least half of them to travel down a 1 km accelerator before decaying.

a) How fast must they be moving?

b) How long will the accelerator look to the particles?

c) If the particles have a diameter of 3 fm, what shape will they be according to an observer standing in the lab?

Science   Advanced-Physics   
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