Answered: Q 2/ Calculate the critical temperature… | bartleby

Related questions

Question

Q 2/ Calculate the critical temperature for starting the commissioning of rubidium vapor
Rb87 by Bose-Einstein if you know that the number of atoms of this vapor per unit volume is
5* 10 12 atons / cm³ and that its atomic weight is 85.47? Then explain why after this isotope
of rubidium (it has a mass of 87) of bosons?

Expert Solution

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 1 images

SEE SOLUTION Check out a sample Q&A here

Blurred answer

Similar questions

1. If a proton is moving at very high speed, so that its kinetic energy is much greater than its rest energy (mc²), can it then decay via p →n + n+? 2. What would an “antiatom," made up of the antiparticles to the constituents of normal atoms, consist of? What might happen if antimatter, made of such antiatoms, came in contact with our normal world of matter?
What do the quark compositions and other quantum numbers imply about the relationships between the Δ+ and the proton? The Δ0 and the neutron?
3. What magnetic field is required for the 7.0-TeV protons in the 4.25-km radius Large Hadron Collider (LHC)? 4. Show that the energy of a particle (charge q.) in a synchotron, in the relativistic limit (v z c), is given by E = Brc, where E is measured in eV, B is the magnetic field, and r is the radius of the orbit.
9. Which of the following reactions and decays are possible? For those forbidden, explain what laws are violated? (а) п- +р+п + п?. (b) a+ +p → n+ 7º. (c) n+ +p→p+ e+. (d) p→ e+ + ve. (e) p→n + e+ + Ve- 10. Draw the two Feynman diagrams for electron-electron scattering at the first-order. Draw three distinct second-order diagrams.
The reaction below describes an antiquark decaying into other particles. The X represents an unknown particle. d → ū + e + X a. What must be the charge of X? b. What must be the baryon number of X? c. What must be the lepton number of X? d. What is particle X?
2. Draw a Feynman diagram for each of the following reactions, provided it is allowed. If the reaction is forbidden explain why. μ → eveVμ τ' →μνμύτ Vμе- → Veft- Vμe+ → Vel+ Vμe+ → Vef+ Vμnμp VμP →μ+n eté → VμVμ ete- →T+T- e¯e → ee
4
A2
4
A nucleus traveling at speed vnucleus = c(1 - 10-5) decays with the emission of a particle of speed vdecay particle = c(1 - 2 x 10-4) at an angle of 45°, as shown in the diagram above. i) What is the velocity (speed and direction) of the decay particle on transforming to the stationary frame of reference of the nucleus. Clearly explain the quantities used in your evaluation, and show the directions and signs of quantities. Give the speed of the decay particle in the form c(1 - ?). ii) If the decay particle was an electron, what was its total energy in the rest frame of the nucleus? What was its total energy in the original frame shown in the above diagram?Give your answers in units of MeV.
Why does the cosmic microwave background (CMB) shine in low-energy microwave wavelengths? O The trapped photons within the plasma of the earliest universe originally had wavelengths in the microwave band due to rapid inflation O The CMB was originally emitted as high-energy gamma rays and x-rays, but the light has redshifted downward to lower-energy microwaves through time When nuclei of H and He first combined with free electrons to create atoms, photons of light were released as microwaves The photons released in the CMB were intensely hot, with energy levels in microwave wavelengths The early universe 380,000 years after the Big Bang was cold (2.7 kelvins) the temperature of microwave energy