A liquid is exposed to infrared radiation with a wavelength of 8.75×10−4 cm. Assume that all the radiation is absorbed and converted to heat. How many photons are required for the liquid to absorb 26.61 J of heat?
I already calculated E, but I don't know where to go next. Send help
Achieve homework #4
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Re: Achieve homework #4
Hi Kiara!
So I did the math for this, and I got 2.27x10^-20 J for E, is this what you got too? I think that is the amount of energy per photon, so then you would just divide 26.61 by the 2.27E-20 value and it should give you the number of photons.
Hope this helps!
So I did the math for this, and I got 2.27x10^-20 J for E, is this what you got too? I think that is the amount of energy per photon, so then you would just divide 26.61 by the 2.27E-20 value and it should give you the number of photons.
Hope this helps!
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Re: Achieve homework #4
Hi! Once you calculate the energy per photon, you simply have to divide the heat absorbed by the energy per photon you just calculated. This should give you the right answer!
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Re: Achieve homework #4
You would first determine the energy of a single photon using Planck's constant and then will go into calculating the wavelength in meters into THEN calculating the energy of every single photon
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Re: Achieve homework #4
Marilyn wrote:Why do you divide by 26?
I don't think anything should be divided by 26. What the other students before mentioned was dividing 26.61 J (from the question) by E, the energy per photon.
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