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## Homework Statement

What is the frequency (in Hz) of infared radiation that has a wavelength of 160.432 micrometers? The speed of light is 3.00 x 10

^{8}m/s.

## Homework Equations

Speed of light = wavelength x frequency

Speed of light = 3.00 x 10^8 m/s

## The Attempt at a Solution

I know that the speed of light is equal to wavelength multiplied by frequency and that this question is basically just plug and chug. But I keep getting the wrong answer. What I did is I converted 160.432 micrometers into meters, which is 1.60432 x 10

^{-4}. Then I divided 3 x 10

^{8}(m/s) by 1.60432 x 10

^{-4}(m). I get the value of 1.86995 x 10

^{12}. I convert this value to nanometers: 1.86 x 10

^{21}. This is the wrong answer! What did I do wrong?