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## It is determined that a certain light wave has a wavelength of 3.012 ×10−12 m. The light travels at 2.99 ×108 m/s. What is the frequency

Question

It is determined that a certain light wave has a wavelength of 3.012 ×10−12 m. The light travels at 2.99 ×108 m/s. What is the frequency of the light wave? (Round your answer to three significant figures.)

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Physics
3 years
2021-08-01T02:12:17+00:00
2021-08-01T02:12:17+00:00 2 Answers
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## Answers ( )

Answer:Explanation:Recall that the velocity (v) of a light wave is defined as the product of its frequency (f) times its wavelength () :

therefore, we can solve for the unknown frequency by dividing both sides of the equation by the frequency:

Since the units “1/second” are what we call Hertz (Hz), the answer can also be given as:

Answer:f=9.93 × 1019 Hz

Explanation:Use the relationship f=vλ to solve for frequency f. Substituting the known quantities yields:

f=vλf=2.99 × 108 m/s3.012 × 10-12 mf=9.926×1019

answer rounded off to 3 significant digits is

f=9.93 × 1019 Hz