! Required information In the LHC, protons are accelerated to a total energy of 7.80 TeV. The mass of proton is 1.673 x 10 2/ kg and Planck's constant is 6.626 x 10-34 J.s. What is the de Broglie wavelength of these protons in Earth's reference frame? 1.59E-19 + 1% m Explanation The de Broglie wavelength, A = h/p.! Required information In the LHC, protons are accelerated to a total energy of 7.80 TeV. The mass of proton is 1.673 x 10 2/ kg and Planck's constant is 6.626 x 10 34 J.s. In the reference frame of the protons, how long does it take the protons to go around the tunnel once? 10.8 + 1% ns Explanation Time taken is the ratio of the distance traveled to the speed. The length contraction equation is L = Loly