A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing


  • 5 years ago

After the video 3, there's a homework which requires a few formulas from lecture 4. Is it supposed to be this way?

  • This Question is Closed
  1. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I mailed OCW and this is their reply: The materials for 3.091SC have been distributed into separate modules and the content for each module has been developed to match the related topics as closely as possible. Yes, it is supposed to be structured this way. You can follow the materials in an order which is most convenient for you.

  2. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    The lecture notes seem to kind of cover the formula for the Bohr radius, but leave out Z (it is 1 for hydrogen).\[r_{n}=n^{2}h^{2} \epsilon _{o}/Z \pi m_{e}e^{2}; Z=1\] Wikipedia gives the formula for the Bohr radius...\[r_{n}=n^{2}ℏ^{2}/Z k_{e} e^{2} m_{e}\]...but, the Coulomb constant (not on list of fundamental physical constants)...\[k_{e}=1/4 \pi \epsilon _{o}\]...and ℏ (h-bar; listed fundamental constant)...\[ℏ=h/2 \pi\]...need to be substituted into the Wikipedia formula to get to the formula listed in the OCW materials. The formulae are out there, you just need to dig for them (for better and for worse).

  3. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...


  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.