13. Electromagnetic waves traveling through Earth's ionosphere obey a dispersion relation w(k) = √b+ (kc)². For a pulse with central frequency wo, find the phase velocity and group velocity in terms of wh.
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![13. Electromagnetic waves traveling through Earth's ionosphere obey a dispersion relation
w(k) = √b+ (kc)².
For a pulse with central frequency wo, find the phase velocity and group velocity in
terms of wh.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F62a79166-ba2c-43d7-9fa1-94c5c5be2063%2Fa23ef479-907a-4ebf-89a8-c325a133d454%2F1yb9zif_processed.png&w=3840&q=75)
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