1.) Protons are sent at .900 c down a tube of length 27.0 m. How long does it ta

Question

1.) Protons are sent at .900 c down a tube of length 27.0 m. How long does it take for the protons to travel this distnace as measured in the lab?
2.) a rod is measured to be 15 cm by an observer moving at .80 c with respect to the length of the rod. What is the proper length of the rod? 1.) Protons are sent at .900 c down a tube of length 27.0 m. How long does it take for the protons to travel this distnace as measured in the lab?
2.) a rod is measured to be 15 cm by an observer moving at .80 c with respect to the length of the rod. What is the proper length of the rod?
2.) a rod is measured to be 15 cm by an observer moving at .80 c with respect to the length of the rod. What is the proper length of the rod?

Explanation / Answer

1) 27/(0.9*3.0E8)= 1.0E-7 s

2) L = L0/gamma

Lo = L*gamma = .15/sqrt(1-.8^2)= 0.25 m or 25 cm

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