anonymous
  • anonymous
WILL FAN AND MEDAL The wavelength of a specific photon in the infrared spectrum is 4 × 10^-6 meters. Given that the speed of light is 2.998 × 10^8 m/s, what would be the frequency of this infrared wave? 11.992*10^2 Hz 0.7495*10^-14 Hz 11.992 * 10^-2 Hz 0.7495 * 10^14 Hz
Chemistry
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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Cuanchi
  • Cuanchi
speed of light = wavelength x frequency frequency = speed of light/ wavelength do the math!!
anonymous
  • anonymous
@Cuanchi if I knew how to do the math I wouldn't be on here
Photon336
  • Photon336
@whateven we need to understand the units first, I agree with what @Cuanchi said

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More answers

Photon336
  • Photon336
speed of light is m/s and the wavelength is in meters.
anonymous
  • anonymous
This is what my question is I can't change it and if I don't answer correctly my gpa goes down
Photon336
  • Photon336
let's take @Cuanchi's formula \[\frac{ speed of light }{ wavelength } = \frac{ m/s }{ m } = \frac{ 1}{ s } = frequency\] all you need to do is plug in the numbers.
anonymous
  • anonymous
I don't know where to plug them in and get a result that matches my choices that's the problem
Cuanchi
  • Cuanchi
The units are wavelength = meters speed of light = meters/ seconds frequency = 1/seconds you dont need to do any conversion of units, just apply the formula that correlate the speed of light with the wavelength and the frequency
Photon336
  • Photon336
\[\frac{ 1 }{ s } = hertz \]
Cuanchi
  • Cuanchi
it is a simple division of the value of speed of light divided by the wavelenght
Cuanchi
  • Cuanchi
Hz = 1/seconds = 1/s
Photon336
  • Photon336
plug the numbers in and tell us what you get before you submit your answer
anonymous
  • anonymous
This still isn't helping. I plug it in like you say and my calculator says syntax error ?
Cuanchi
  • Cuanchi
2.998 × 10^8 m/s /4 × 10^-6 meters= x.xxx 10^xx
anonymous
  • anonymous
that's what i typed in. It said syntax error
Photon336
  • Photon336
@whateven use ( ) around the numbers like this \[\frac{ (2.99x10^{8}) m/s }{ (4.0x10^{-6})m }= Hz \]
Photon336
  • Photon336
You can also enter this in on a scientific calculator online
anonymous
  • anonymous
7.495*10^13 so something is wrong @photon336
anonymous
  • anonymous
????
Photon336
  • Photon336
That's correct,
Photon336
  • Photon336
but in the answers they wrote it strangely, if you moved the decimal place in the 7.4 1 over to the right what answer choice would you get?
anonymous
  • anonymous
The last one?
Photon336
  • Photon336
yeah that's it
anonymous
  • anonymous
Thanks!

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