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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 2 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 4 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 4 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 4 months ago
 1 reply
 No Medals Yet
Mathematics

roadjester:
Group Title
Integration help!!!
 updated 4 months ago
 6 replies
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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 4 months 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 4 months 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 4 months 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 4 months 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 5 months 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 5 months ago
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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 5 months 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 5 months 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 5 months 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 5 months 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 5 months 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 5 months 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 5 months ago
 52 replies
 5 Medals
Mathematics

roadjester:
Group Title
23. Determine the voltage labeled v in the circuit of Fig. 4.49.
 updated 5 months 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 5 months 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 5 months 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 5 months 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 5 months 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 5 months 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 5 months 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 5 months ago
 2 replies
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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 5 months 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 5 months ago
 6 replies
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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 6 months 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 6 months ago
 2 replies
 No Medals Yet
Mathematics
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