## anonymous one year ago Calculate the frequency of radiation with a wavelength of 8973 (symbol following is A with a circle on top)

1. whpalmer4

$8973{\buildrel _{\circ} \over {\mathrm{A}}}$is that what the wavelength is? Do you know the definition of the $${\buildrel _{\circ} \over {\mathrm{A}}}$$ unit?

2. whpalmer4

$1\text{ } {\buildrel _{\circ} \over {\mathrm{A}}} = 10^{-10} \text{ m}$ Frequency and wavelength for electromagnetic waves are related by $c = f \lambda$ where $$c$$ is the speed of light in vacuum, $$2.99792458*10^8\text{ m/s}$$ $$f$$ is frequency and $$\lambda$$ is wavelength in meters

3. anonymous

yes that is what I was trying to say, thank you I will get back to you if i have questions

4. anonymous

so the wavelength would be : 8973*10^-10?

5. whpalmer4

yes, wavelength is $$8973*10^{-10}\text{m}$$ that gives you $c = f \lambda$$\lambda = \frac{c}{f} = \frac{2.99792458*10^8\text{ m/s}}{8973*10^{-10}\text{m}} =$

6. anonymous

0.000003341 would that be 3.3*10^14 Hz?

7. whpalmer4

I would carry 4 decimal places to match the 4 you had for the wavelength, but yes, $3.341*10^{14} \text{ Hz}$

8. anonymous

okay thank you so much, this helped a lot!!

9. whpalmer4