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roadjester:
Group Title
40. A sample consists of \(1.00 X 10^6\) radioactive nuclei with a halflife of 10.0 h. No other nuclei are present at time t = 0. The stabl…
 updated 10 months ago
 62 replies
 1 Medal
Mathematics

roadjester:
Group Title
Planck's constant and the photoelectric effect:
Someone help. I have no clue what the difference between standard deviation and standard …
 updated 11 months ago
 2 replies
 No Medals Yet
Mathematics

roadjester:
Group Title
32. An electron has a kinetic energy of 12.0 eV. The electron is incident upon a rectangular barrier of height 20.0 eV and width 1.00 nm. If…
 updated 11 months ago
 5 replies
 No Medals Yet
Mathematics

roadjester:
Group Title
28. Suppose a quantum particle is in its ground state in a box that has infinitely high walls (see Active Fig. 41.4a). Now suppose the left…
 updated 11 months ago
 1 reply
 No Medals Yet
Mathematics

roadjester:
Group Title
Integration help!!!
 updated one year ago
 6 replies
 No Medals Yet
Mathematics

roadjester:
Group Title
\(\Psi = \sqrt{\dfrac 2 L} sin{(\dfrac {2\pi x}{L})}\) for 0\(\le\)x\(\le\) L.
Determine the expectation value.
…
 updated one year ago
 58 replies
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Mathematics

roadjester:
Group Title
16. For a quantum particle of mass m in the ground state of a square well with length L and infinitely high walls, the uncertainty in positi…
 updated one year ago
 7 replies
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Mathematics

roadjester:
Group Title
When a particle is dropped into a 1D infinite potential well of finite width L, by solving the Schrodinger's equation, \(\LARGE {h^2\over …
 updated one year ago
 67 replies
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Mathematics

roadjester:
Group Title
4. For the circuit of Fig. 6.40, calculate \(v_{out}\) if (a) R1 = R2 = 100 k\(\Omega\), RL = 100 \(\Omega\), and \(v_{in}\) = 5 V; (b) R1…
 updated one year ago
 50 replies
 4 Medals
Mathematics

roadjester:
Group Title
How do I solve this isobaric differential equation?
\[\large ydx+(2x^2y+x)dy=0\]
 updated one year ago
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Mathematics

roadjester:
Group Title
How do I solve this isobaric differential equation?
\[\large ydx+(2x^2y+x)dy=0\]
 updated one year ago
 No Medals Yet
Mathematics

roadjester:
Group Title
56. Why is the following situation impossible? An air rifle is used to shoot 1.00g particles at a speed of vx = 100 m/s. The rifle’s barrel…
 updated one year ago
 11 replies
 2 Medals
Mathematics

roadjester:
Group Title
49. Neutrons traveling at 0.400 m/s are directed
through a pair of slits separated by 1.00 mm. An array of
detectors is placed 10.0 m from…
 updated one year ago
 35 replies
 2 Medals
Mathematics

roadjester:
Group Title
27. A photon having energy E0 = 0.880 MeV is scattered by a free electron initially at rest such that the scattering angle of the scattered …
 updated one year ago
 9 replies
 2 Medals
Mathematics

roadjester:
Group Title
19. Electrons are ejected from a metallic surface with speeds of up to 4.60 X 10^5 m/s when light with a wavelength of 625 nm is used. (a) W…
 updated one year ago
 26 replies
 4 Medals
Mathematics

roadjester:
Group Title
24. A photon having wavelength lambda scatters off a free electron at A (Fig. P40.24), producing a second photon having wavelength lambdapr…
 updated one year ago
 1 reply
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Mathematics

roadjester:
Group Title
17. Two light sources are used in a photoelectric experiment to determine the work function for a particular metal surface. When green light…
 updated one year ago
 12 replies
 1 Medal
Mathematics

roadjester:
Group Title
This problem is about how strongly matter is coupled to radiation, the subject with which quantum mechanics began. For a simple model, consi…
 updated one year ago
 52 replies
 5 Medals
Mathematics

roadjester:
Group Title
23. Determine the voltage labeled v in the circuit of Fig. 4.49.
 updated one year ago
 2 replies
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Mathematics

roadjester:
Group Title
\[\large {3v_1\over 40}  {v_p\over 40}=0\]
\[\large {v_1\over 40}  {11v_p\over 200} + {v_3 \over 50}=0\]
\[\large {v_p\over 50}  {3v_3\ov…
 updated one year ago
 3 replies
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Mathematics

roadjester:
Group Title
12. Use nodal analysis to find \[v_P\] in the circuit shown in Fig. 4.38.
 updated one year ago
 20 replies
 2 Medals
Mathematics

roadjester:
Group Title
73. The creation and study of new and mery massive elementary particles is an important part of contemporary physics. To create a particle o…
 updated one year ago
 5 replies
 1 Medal
Mathematics

roadjester:
Group Title
\[\gamma_p m_p v_p =\gamma_M M_p V_N \] because the momentum of an inelastic collision is conserved.
The relativistic mass of the new par…
 updated one year ago
 3 replies
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Mathematics

roadjester:
Group Title
\[\huge m_pc^2\sqrt{1+{v^2_{m_p}\over c^2}\ \over 1{v^2_{m_p}\over c^2}}+m_pc^2\over {\sqrt{1+{v^2_M \over 1{v^2_m \over c^2}}}}\]
@Las…
 updated one year ago
 38 replies
 1 Medal
Mathematics

roadjester:
Group Title
7e P39.58
parts a and b attached
(c) Argue for or against the view that we should expect the result to be u=(c/n)+v according to the Galil…
 updated one year ago
 2 replies
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Mathematics

roadjester:
Group Title
62. An object disintegrates into two fragments. One fragment has mass 1.00 MeV/c2 and momentum 1.75 MeV/c in the positive x direction, and t…
 updated one year ago
 2 replies
 No Medals Yet
Mathematics

roadjester:
Group Title
52. In a nuclear power plant, the fuel rods last 3 yr before they
are replaced. The plant can transform energy at a maximum
possible rate …
 updated one year ago
 4 replies
 1 Medal
Mathematics

roadjester:
Group Title
50. Massive stars ending their lives in supernova explosions produce the nuclei of all the atoms in the bottom half of the periodic table by…
 updated one year ago
 6 replies
 No Medals Yet
Mathematics

roadjester:
Group Title
47. A pion at rest (m_p = 273m_e) decays to a muon (m_m = 207m_e) and an antineutrino (m~0). Using SI units, find (a) the kinetic energy of …
 updated one year ago
 12 replies
 No Medals Yet
Mathematics

roadjester:
Group Title
47. A pion at rest (m_p = 273m_e) decays to a muon (m_m = 207m_e) and an antineutrino (m~0). Find (a) the kinetic energy of the muon
and (b…
 updated one year ago
 2 replies
 No Medals Yet
Mathematics
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