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MMLU-Pro / 10313 / According to the free electron gas theory the average kinetic energy, E, of the…

Problem

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question

According to the free electron gas theory the average kinetic energy, E, of the free electrons in a metal has been shown to be (3/5)E_F where E_F is the Fermi energy of the metal. Use this information to estimate the average speed of the valence electrons in copper. (The Fermi energy of copper is 7eV).

category

physics

options

  1. 3.0 × 10^5 m/s
  2. 1.21 × 10^6 m/s
  3. 8.5eV
  4. 5.8 × 10^-19 J
  5. 9.3 × 10^11 m/s
  6. 2.6 × 10^6 m/s
  7. 2.2 × 10^6 m/s
  8. 6.7 × 10^-19 m/s
  9. 1.47 × 10^12 m/s
  10. 4.2eV

src

stemez-Physics

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Source and history

upstream_id / Original problem ID
10313
task_id
49cdd0f2-833b-5fa3-ae92-31c4d0887721
task_key
default--test--10313
task_revision_id
1
config / split
default / test

Official source

initial import