Answered: What is meant by length contraction?…

Physics for Scientists and Engineers

10th Edition

ISBN:9781337553278

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter38: Relativity

Section: Chapter Questions

Problem 4P: A muon formed high in the Earths atmosphere is measured by an observer on the Earths surface to...

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Question

i). What is meant by length contraction?
ii). Hence, what is the length of a meterstick measured by an observer travelling at
α). 1610km/hr and β). 0.8c [c =3.0 x10^8 m/s]

b)

i). What is meant by Time dilation?
ii). Hence, a clock on a space rocket ticks off at a time interval of 1hour. What is the time elapse on earth if the space rocket is travelling at a speed
α). 1610km/hr and β). 0.8c ? [c =3.0 x10^8m/s] 7MARKS/EV

c)

i). A 50 grams in radionuclide decays 45 grams in 240 years. What is the half- life of the radionuclide?
ii). If the energy of the hydrogen atom is -13.6 eV/n^2, determine the energy of the hydrogen atom in the state n= 1,2,3,4,5 and hence the energy required to transition an atom from the ground state to n=5? [ 1eV = 16 x10-19 J , h = ]

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