1.7. Higgs bosons have been observed at the Large Hadron Collider in Switzerland in experimentsusing beams of very fast protons. A typical experiment would involve accelerating protons toan energy of about 5 TeV. At what percentage of the speed of light is such a proton travelling?The rest mass energy of a Higgs boson is about 126 GeV. How many times the proton restmass energy is this?

Step 1:The total energy of the proton is given as E=5TeV=5000GeVrest mass energy m0c2=126GeV Step…

Answered: 1.7. Higgs bosons have been observed at…

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

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Chapter11: Particle Physics And Cosmology

Section: Chapter Questions

Problem 66P: (a) Wliat is the approximate velocity relative to us of a galaxy near the edge of the known...

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(a) Wliat is the approximate velocity relative to us of a galaxy near the edge of the known universe, some 10 Gly away? (b) What fraction of the speed of light is this? Note that we have observed galaxies moving away from us at greater than 0.9c.
Plans for ail accelerator that produces a secondary beam of K mesons to scatter from nuclei, for the purpose of studying the strong force, call for them to have a kinetic energy of 500 MeV. (a) What would the relativistic quantity =11v2/c2be for these particles? (b) How long would their average lifetime be in the laboratory? (c) How far could they travel in this time?
(a) What is the approximate speed relative to us of a galaxy near the edge of the known universe, some 10 Gly away? (b) What traction of the speed of light is this? Note that we have observed galaxies moving away from us at greater than 0.9c.
In an SLAC linear accelerator, electrons are accelerated to 30 Gev. a. What is the difference, in m/s, between the velocity of the electron and the velocity of ? light. b. What is the energy of the protons if they are moving at the same speed?
Plz do fast, it is urgent, i m waiting for your answer, vll rate high ...
Problem 3. One of the predictions of the special theory of relativity is that the "rest mass energy" of an object of mass m is E = mc². 1. What is the rest mass energy for a proton in (a) Joules & (b) eV 2. Repeat above exercise for an electron
Physics written by hand.
The highest-energy cosmic ray ever detected had an energy of about 3.0 x 1020 eV. Assume that this cosmic ray was a proton.a. What was the proton’s speed as a fraction of c?b. If this proton started at the same time and place as a photon traveling at the speed of light, how far behind the photon would it be after traveling for 1 ly?
High-energy particles are observed in laboratories by photographing the tracks they leave in certain detectors; the length of the track depends on the speed of the par- ticle and its lifetime. A particle moving at 0.993c leaves a track 1.15 mm long. What is the proper lifetime of the particle?
measured by this observer to be 10 times longer than its lifetime when at rest relative to the observer? 3. The lifetime of a free neutron is 886 s. If a neutron moves with a speed of 2.9 x 108m/s relative to an observer in the lab, what does the observer measure the neutron's lifetime to be? 4. A computer in a laboratory requires 2.50 us to make a certain calcu- lation, as measured by a scientist in the lab. To someone moving past the lab at a relative speed of 0.995c, how long will the same cal- culation take? 5. The formula for length contraction gives the length of an interval on a ruler moving with velocity v relative to an observer as V1-v²/c² times the length of the same interval on a ruler at rest with respect to the observer. By what fraction is the length of a meter stick reduced if its velocity relative to you is measured to be 95 percent the speed of light? 6. If an electron is speeding down the two-mile-long Stanford Linear Accelerator at 99.98 percent the speed of light,…
1.11. A particle decays into two photons. The energies of the emitted photons are measured to be 200 MeV and 500 MeV. What is the speed of a 7º if it has a rest mass 135MeV/c²?
High-energy particles are observed in laboratories by photographingthe tracks they leave in certain detectors; the length of the trackdepends on the speed of the particle and its lifetime.A particle moving at 0.85 c leaves a track 1.25 mm long. What is the properlifetime of the particle?

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