UNIVERSE (LOOSELEAF):STARS+GALAXIES
6th Edition
ISBN: 9781319115043
Author: Freedman
Publisher: MAC HIGHER
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Question
Chapter 26, Problem 17Q
To determine
The time spent by the pair of proton-antiproton without the violation of the principle of conservation of mass.
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A proton‑antiproton annihilation takes place, leaving two photons with a combined energy of 2.50 GeV.
Find the kinetic energy Kp of the proton if the proton had the same kinetic energy as the antiproton.
Find the kinetic energy Kp′ of the proton if the proton had 1.25 times as much kinetic energy as the antiproton.
The mass of a theoretical particle that may be associated with the unification of the electroweak and strong forces is 1014 GeV/c2. How many proton masses is this?
If neutrino oscillations do occur, will they violate conservation of the various lepton family numbers (Le ,Lμ, and Lτ )? Will neutrino oscillations violate conservation of the total number of leptons?
Chapter 26 Solutions
UNIVERSE (LOOSELEAF):STARS+GALAXIES
Ch. 26 - Prob. 1QCh. 26 - Prob. 2QCh. 26 - Prob. 3QCh. 26 - Prob. 4QCh. 26 - Prob. 5QCh. 26 - Prob. 6QCh. 26 - Prob. 7QCh. 26 - Prob. 8QCh. 26 - Prob. 9QCh. 26 - Prob. 10Q
Ch. 26 - Prob. 11QCh. 26 - Prob. 12QCh. 26 - Prob. 13QCh. 26 - Prob. 14QCh. 26 - Prob. 15QCh. 26 - Prob. 16QCh. 26 - Prob. 17QCh. 26 - Prob. 18QCh. 26 - Prob. 19QCh. 26 - Prob. 20QCh. 26 - Prob. 21QCh. 26 - Prob. 22QCh. 26 - Prob. 23QCh. 26 - Prob. 24QCh. 26 - Prob. 25QCh. 26 - Prob. 26QCh. 26 - Prob. 27QCh. 26 - Prob. 28QCh. 26 - Prob. 29QCh. 26 - Prob. 30QCh. 26 - Prob. 31QCh. 26 - Prob. 32QCh. 26 - Prob. 33QCh. 26 - Prob. 34QCh. 26 - Prob. 35QCh. 26 - Prob. 36QCh. 26 - Prob. 37QCh. 26 - Prob. 38QCh. 26 - Prob. 39QCh. 26 - Prob. 40QCh. 26 - Prob. 41QCh. 26 - Prob. 42QCh. 26 - Prob. 43QCh. 26 - Prob. 44QCh. 26 - Prob. 45QCh. 26 - Prob. 46QCh. 26 - Prob. 47Q
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- Three identical very dense masses of 5600kg each are placed on the x axis. One mass is at x1=-110cm, one is at the origin, and one is at x2=400cm. What is the magnitude of the net gravitational for Fgrav on the mass at the origin due to the other two masses? Take the gravitational constant to be G=6.67*10^-11Nm^2/kg^2 Express your answer in newtons to three significant figures.arrow_forwardCERN can accelerate protons up to 99.9999991% of the speed of light. What is the γ factor for these protons?arrow_forwardIt is the year 2150 and the United Nations Space Federation has finally perfected the storage of antiprotons for use as fuel in a spaceship. (Antiprotons are the antiparticles of protons. Preparations are under way for a manned spacecraft visit to possible planets orbiting one of the three stars in the star system Alpha Centauri, some 4.30 lightyears away. Provisions are placed on board to allow a trip of 16 years’ total duration. How fast must the spacecraft travel if the provisions are to last? Neglect the period of acceleration, turnaround, and visiting times, because they are negligible compared with the actual travel time.arrow_forward
- If neutrino oscillations do occur, will they violate conservation of the various lepton family numbers ( Le , Lµ , and Lτ)? Willneutrino oscillations violate conservation of the total number of leptons?arrow_forwardNeutron stars are extremely dense objects that are formed from the remnants of supernova explosions. Many rotate very rapidly. Suppose the mass of a certain spherical neutron star is twice the mass of the Sun and its radius is 10.0 km. Determine the greatest possible angular speed the neutron star can have so that the matter at its surface on the equator is just held in orbit by the gravitational force.arrow_forwardBased on quark composition of a proton, show that its charge is +1.arrow_forward
- The Lorentz force causes charged particles to orbit around magnetic field lines. At what rate do protons orbit around a field line? Assume the protons have energy of 1 MeV and are in a magnetic field with strength B = 2.4×10-7 T. Find the orbital frequency in revolutions/second (Hz); express answer to 3 significant digits. The protons orbit the field at _____ Hz.arrow_forwardA gamma ray burst delivers approximately 1.0 X10-6 joules/m2 to a detector on an orbiting space telescope. Assuming that the red shift indicates that the source is 5 X109 light years away (1 yr =3.16X107 seconds) and that the energy at the detector has been corrected for the redshift, what is the energy output of the source and how does it compare to the rest energy of the Sun. The speed of light is 3.0 X 108 m/sec. A year is 3.16 X 107 sec. The mass of the Sun is 2 X 1030 kg. Rest mass energy is E=mc2. The surface area of a sphere is 4πr2. Answer choices: 1.2 X1045joules and 0.7 % 8 X 1047 joules and 100% 5 X 1046 joules and 8% 2.8 X 1046 joules and 16%arrow_forwardIf the Large Hadron Collider is 27 km long, and visible light travels 3.0 x 108 m/s, how long does it take a ray of visible light to travel from one end of the collider to the other? O 1.5 × 10-9 s O 1.5 × 10-6 s 0 9.0x 10-5s 1,3 × 1011 s O 4.9 × 1014 sarrow_forward
- The π0 is its own antiparticle and decays in the following manner: π0 → ϒ + ϒ . What is the energy of each ϒ ray if the π0 is at rest when it decays?arrow_forwardA galaxy in the constellation Pisces is 5210 Mly from the earth. (a) Use the Hubble law to calculate the speed at which this galaxy is receding from earth. (b) What redshifted ratio l0 /lS is expected for light from this galaxy?arrow_forward
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