## Chapter 1 Question 9

$c=\lambda v$

Abigail Volk 1F
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### Chapter 1 Question 9

In the table, what conversion formula would we use to find wave length and energy of photon from the frequency 8.7x10^14 Hz?

Naveed Zaman 1C
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### Re: Chapter 1 Question 9

To find wavelength, use c = λ x v (c=3x108, λ is wavelength, and v is frequency). To find energy, use E = h x v (E is energy, h is Planck's constant 6.626x10-34). You already have frequency so just plug in the value into these equations. Hope this helps!

Krupa Prajapati
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### Re: Chapter 1 Question 9

Hi! Something to also remember for solving this problem is that Hertz can be converted to seconds^-1. This way, when you are solving the problem the units will cancel and solving the problem will be easier to follow. Hope this helps!

Alissa Stanley 3G
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### Re: Chapter 1 Question 9

To clarify, is Hz always interchangeable with s^-1 when solving frequency/wavelength problems? Is any multiplication or division required for the conversion?

Tatiana Hage 2E
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### Re: Chapter 1 Question 9

Hz is 1 cycle per second, so it is always interchangeable with s^-1