Wondering if someone can please explain why this question is unsound; Given that v= frequency x lambda and the frequency of a wave under investigation is 15Ghz with a wavelength of 0.2m, select the correct answer below.

a. v= 7.5 x 10^1 0 m/s
b. None of these answers are correct.
c. v= 1.3 x 10^-11 m/s
d. The question is unsound.
e. v= 3x10^9 m/s

Explanation:

The question is sound. The frequency and wavelength are given so you can solve for wave's velocity. It's just a matter of changing the notation.

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martin luther king, jr. was a social activist and baptist minister who played a key role in the american civil rights movement from the mid-1950s until his assassination in 1968. the video shows his manner and attitude having or showing a composed or serious manner that is worthy of respect so dignified is the correct answer

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