College Physics
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Particles accelerators such as the Large Hadron Collider (LHC) can accelerate particles up to tremendous energies. Suppose the LHC accelerates alpha particles (a.k.a. helium nuclei with a charge of +2e and a mass of 6.645 x 10^-27 kg) with a kinetic energy of 7.5 TeV*, what would the speed of one particle be if relativistic effects** are ignored?

Give your answer in units of Gm/s.

*T as in Tera, for 10^12. “eV” stands for “electron volt,” which is a non-SI unit of energy equal to what one electron would gain after travelling through 1V. 1eV = 1.602 x 10^-19 J.

**Special relativity is necessary to correctly account for the limiting speed of light, which is about 3 x 10^8 m/s. Note that in ignoring this effect and applying Newtonian mechanics (what you learned in Phys1210 or equivalent), you’ll be getting a speed way above 0.3 Gm/s. That’s just how insanely energetic the LHC is.
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Transcribed Image Text:Particles accelerators such as the Large Hadron Collider (LHC) can accelerate particles up to tremendous energies. Suppose the LHC accelerates alpha particles (a.k.a. helium nuclei with a charge of +2e and a mass of 6.645 x 10^-27 kg) with a kinetic energy of 7.5 TeV*, what would the speed of one particle be if relativistic effects** are ignored? Give your answer in units of Gm/s. *T as in Tera, for 10^12. “eV” stands for “electron volt,” which is a non-SI unit of energy equal to what one electron would gain after travelling through 1V. 1eV = 1.602 x 10^-19 J. **Special relativity is necessary to correctly account for the limiting speed of light, which is about 3 x 10^8 m/s. Note that in ignoring this effect and applying Newtonian mechanics (what you learned in Phys1210 or equivalent), you’ll be getting a speed way above 0.3 Gm/s. That’s just how insanely energetic the LHC is.
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