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

SEE ALSO  An object is dropped from the top of a tower. If it takes 4s for it to reach the ground, calculate the height of the tower.(g = 10 ms‾², ignore air resistance)

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