A. are longitudinal
B. have the same frequency
C. have the same wavelength
D. travel at the same speed in a vacuum
Correct Answer: Option D
D. travel at the same speed in a vacuum
A. are longitudinal
B. have the same frequency
C. have the same wavelength
D. travel at the same speed in a vacuum
Correct Answer: Option D
D. travel at the same speed in a vacuum
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