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The point of this problem is to be able to use the c=λν to find the wavelength of light. This problem could also be structured to find the frequency of the light using just the wavelength.

**1.** The equation we’re working with has two values already entered in it. The speed of light (3.00*10^8 m/s) is a constant, and the frequency we’re given is 8.43*10^14 Hz.

** 2. **Plug in your values, but leave lamba (λ) as an unknown variable.

**3. **The wavelength (λ) equals out to be 5.5587*10^-7 meters. This is the wavelength of the light in meters.

** 4. **Wavelengths of light are usually measured or presented in nanometers (nm), so we need to convert. There are 10^9 nanometers in every meter. By using dimensional analysis, we find that the wavelength of the light is** 355.87 nm. This is our final answer.**

This answer makes sense since light wavelengths usually range from ~400-700 nm. It’s a little on the lower side, but that’s okay.

Questions? Feedback? Drop a comment!

Thanks everyone!

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