Questions from Modern Physics

Q: Which of the following reactions obey the conservation of baryon number?

Which of the following reactions obey the conservation of baryon number? a. p + p → p + e+; b. p + n → 2e+ + e-; c. p → n + e- + ve; d. p + p → 2γ.

Q: In which of the following reactions or decays is strangeness conserved?

In which of the following reactions or decays is strangeness conserved? In each case, explain your reasoning. a. K+→ µ+ + vµ; b. n + K+→ p + π0; c. K+ + K-→ π 0 + π 0; d. p + K- →Λ0 + π 0.

Q: Determine the electric charge, baryon number, strangeness quantum number,

Determine the electric charge, baryon number, strangeness quantum number, and charm quantum number for the following quark combinations: a. uus, b. cs, c. ddu, and d. cb.

Q: Determine the electric charge, baryon number, strangeness quantum number,

Determine the electric charge, baryon number, strangeness quantum number, and charm quantum number for the following quark combinations: a. uds; b. cu; c. ddd; and d. dc. Explain your reasoning....

Q: What is the total kinetic energy of the decay products when an

What is the total kinetic energy of the decay products when an upsilon particle at rest decays to τ+ + τ- ?

Q: Given that each particle contains only combinations of u, d,

Given that each particle contains only combinations of u, d, s, u, d, and s, use the method of Example 44.7 to deduce the quark content of a. a particle with charge +e, baryon number 0, and strangene...

Q: Figure 40.15a shows that the higher the energy of a

Figure 40.15a shows that the higher the energy of a bound state for a finite potential well, the more the wave function extends outside the well (into the intervals x L). Explain why this happens. F...

Q: A positive pion at rest decays into a positive muon and a

A positive pion at rest decays into a positive muon and a neutrino. a. Approximately how much energy is released in the decay? (Assume the neutrino has zero rest mass. Use the muon and pion masses gi...

Q: Section 44.5 states that current experiments show that the mass

Section 44.5 states that current experiments show that the mass of the Higgs boson is about 125 GeV/c2. What is the ratio of the mass of the Higgs boson to the mass of a proton?

Q: The spectrum of the sodium atom is detected in the light from

The spectrum of the sodium atom is detected in the light from a distant galaxy. a. If the 590.0-nm line is redshifted to 658.5 nm, at what speed is the galaxy receding from the earth? b. Use the Hubb...