Quiz 1 number 3

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Allison_Eminhizer_3A
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Quiz 1 number 3

Postby Allison_Eminhizer_3A » Tue Oct 11, 2016 10:20 pm

Hi, for #3 I converted megahertz to hertz for the given energy amount, and I was going to use E=hv and then c= lambda v
But h= 6.626 x 10^-34 J/s
And my energy is 9.95 x 10^7 Hz
My point is they're different units
Can I still find v in E= hv?
Or do I need to do some kind of conversion

Tara_Shooshani_3N
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Joined: Wed Sep 21, 2016 3:00 pm

Re: Quiz 1 number 3

Postby Tara_Shooshani_3N » Tue Oct 11, 2016 10:26 pm

You do not need to convert the units. Another way to write Hz is s^-1, so the seconds cancel and you're left with J. The book tends to use s^-1 instead of Hz when giving the units of frequency.

Allison_Eminhizer_3A
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Re: Quiz 1 number 3

Postby Allison_Eminhizer_3A » Tue Oct 11, 2016 11:52 pm

Okay Thankyou!


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