Question 31.Q-Q.1: Given the identification of the particles in Figure 31.2b, w...

Principles of Physics A Calculus-Based Text

Given the identification of the particles in Figure 31.2b, what is the direction of the external magnetic field in Figure 31.2a? (a) into the page (b) out of the page (c) impossible to determine

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Question: 31.Q-Q.6

Using a coordinate system like that in Figure 31.8, draw an eightfoldway diagram for the three quarks in the original quark model. ...

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The diagram would look like this one:

Question: 31.Q-Q.5

Suppose a claim is made that the decay of the neutron is given by n → p + e^-. What conservation laws are violated by this decay? (a) energy (b) angular momentum (c) electric charge (d) baryon number (e) electron-lepton number (f) muon-lepton number (g) tau-lepton number (h) no conservation laws ...

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(b), (e). There is one spin-

\frac{1}{2} [/...

Question: 31.Q-Q.4

Consider the following decay: π^0 → µ^- + e^+ + νµ . What conservation laws are violated by this decay? (a) energy (b) angular momentum (c) electric charge (d) baryon number (e) electron-lepton number (f) muon-lepton number (g) tau-lepton number (h) no conservation laws ...

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(b), (e), (f). The pion on the left has integral s...

Question: 31.Q-Q.3

Consider the following decay: n → p + π^-. What conservation laws are violated by this decay? (a) energy (b) electric charge (c) baryon number (d) angular momentum (e) no conservation laws ...

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(a). The sum of the proton and pion masses is larg...

Question: 31.Q-Q.2

Consider the following decay: n → π^+ + π^- + µ^+ + µ^-. What conservation laws are violated by this decay? (a) energy (b) electric charge (c) baryon number (d) angular momentum (e) no conservation laws ...

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(c), (d). There is a baryon, the neutron, on the l...

Question: 31.6

The Critical Density of the Universe Estimate the critical mass density ρc of the Universe, using energy considerations. ...

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Figure 31.20 shows a large section of the Universe...

Question: 31.5

Recession of a Quasar A quasar is an object that appears similar to a star and that is very distant from the Earth. Its speed can be measured from Doppler shift measurements in the light it emits. A certain quasar recedes from the Earth at a speed of 0.55c. How far away is it? ...

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A: We can find the distance from Hubble’s law: [la...

Question: 31.4

Is Strangeness Conserved? A Determine whether the following reaction occurs on the basis of conservation of strangeness. π^0 + n → K^+ + ∑^- ...

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A: From Table 31.2, we see that the initial system...

Question: 31.3

Checking Lepton Numbers A Use the law of conservation of electron-lepton number to determine if the decay scheme µ^- → e^- + νe + νµ can occur. ...

Verified Answer:

A: Because this decay involves a muon and an elect...

Question: 31.2

Detecting Proton Decay Measurements taken at the Super Kamiokande neutrino detection facility in Japan (Fig. 31.6) indicate that the half-life of protons is at least 10³³ years. A Estimate how long we would have to watch, on average, to see a proton in a glass of water decay. ...

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A: To conceptualize the problem, imagine the numbe...