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About AndrewC

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11-29-2019 08:46 PM
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12 Likes

  1. lesaid
    lesaid liked post by AndrewC On thread : Variation on the 'twin paradox' with no change of frame?
    This (http://users.telenet.be/vdmoortel/dirk/Physics/Acceleration.html) is an excellent starting point.
    Liked On: 06-07-2018, 07:41 AM
  2. QuantumDynamite99
    QuantumDynamite99 liked post by AndrewC On thread : !HOMEWORK 2! Electricity & Magnetism - Electron/Proton Magnetic Fields Question HELP!
    Correct on both accounts.
    Liked On: 03-18-2018, 10:45 PM
  3. QuantumDynamite99
    QuantumDynamite99 liked post by AndrewC On thread : !HOMEWORK 2! Electricity & Magnetism - Electron/Proton Magnetic Fields Question HELP!
    You need to square EACH radius, not their sum. You also need to start working with symbolic formulas, do the numerical substitution at the end, after you got the final symbolic formula. This will...
    Liked On: 03-06-2018, 11:14 AM
  4. QuantumDynamite99
    QuantumDynamite99 liked post by AndrewC On thread : !HELP! Electricity & Magnetism (Proton Path in a Magnetic Field) MasteringPhysics Assignment (PART E)
    You will need to get the equation of the trajectory (the "helix") in order to solve the next part (part E). x(t)=.... y(t)=..... z(t)=..... For that, you will need to form and solve the...
    Liked On: 03-05-2018, 09:08 PM
  5. skj351
    skj351 liked post by AndrewC On thread : Average velocity Vs. velocity
    Here is a way to prove your student wrong: assume that the speed was constant, that means that each 10m segment is covered in 6s (5m is covered in 3s) for a total of 6+6+3=15. Therefore, the...
    Liked On: 01-31-2018, 07:24 PM
  6. Chandrabhan
    Chandrabhan liked post by AndrewC On thread : If Gravity is not a force, how do we stand on earth's surface?
    Inward, see here (https://en.wikibooks.org/wiki/A-level_Physics/Forces,_Fields_and_Energy/Gravitational_fields#/media/File:Gravitymacroscopic.png).
    Liked On: 01-17-2018, 11:07 AM
  7. lesaid
    lesaid liked post by AndrewC On thread : Hawking radiation and graviational redshift ... ?
    But the "emission" does NOT happen from the EH. It is from ABOVE the EH. Hence, the redshift is not infinite. It doesn't make a "different" prediction. They don't.
    Liked On: 01-06-2018, 10:37 PM
  8. nietzscheswoman
    nietzscheswoman liked post by AndrewC On thread : Band gaps
    No (https://en.wikipedia.org/wiki/Covalent_bond#Covalent_structures)
    Liked On: 01-04-2018, 01:01 AM
  9. nietzscheswoman
    nietzscheswoman liked post by AndrewC On thread : Band gaps
    Yes (https://en.wikipedia.org/wiki/Electronic_band_structure#Why_bands_and_band_gaps_occur)
    Liked On: 01-04-2018, 01:01 AM
  10. nietzscheswoman
    nietzscheswoman liked post by AndrewC On thread : Band gaps
    More like the electron orbitals of the atoms get "blended together" to the extent that you no longer have electrons "belonging" to a certain atom.
    Liked On: 12-29-2017, 06:11 PM
  11. nietzscheswoman
    nietzscheswoman liked post by AndrewC On thread : Band gaps
    The electrons in metals are free to move, basically metals do not have valence bands, they only have conduction bands.
    Liked On: 12-29-2017, 02:26 AM
  12. nietzscheswoman
    nietzscheswoman liked post by AndrewC On thread : Band gaps
    Right
    Liked On: 12-28-2017, 11:03 PM