How to post homework problems on a mobile phone

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john.lee
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Homework Statement



Attached file

Homework Equations



Attached file[/B]

The Attempt at a Solution



Attached fileSorry, I am in mobile, so i cant
Write all the things,
 
Attachments
  • Scanned textbook page titled Problems, page 383, showing problem 7-9 about a uniform plane wave with phase velocity 50 m/s, wave expression psi = 5e^(i(40pi(x+2y+2z)-iwt)), x-intercept at t = 0.02 sec.
    image.jpg
    17.9 KB · Views: 445
  • Handwritten notes on lined paper, rotated sideways, showing a wave problem: relevant equations kA = 2π, v_p = ω/k, ω = 2π/T, then Ψ = 5e^(i(4ax+4y+2z)−ωt), k·r̂ = 4π(7x̂+2ŷ+2ẑ), k = 120π, λ = 1/50 m, ω = 120π×50 rad/s, T = 1/3000 s, and an attempt continuing with 'x-intercept is 0.5m'.
    image.jpg
    35.6 KB · Views: 479
Things that greatly reduce your chance of a response:
  • Posting images that come out sideways on
  • Posting working as images of handwriting instead of as typed text (preferably with latex)
  • Plugging in numbers prior to the final algebraic step
Hope this helps