Asked by Sarah
Estimate how many microwave photons with 1=12 cm must be absorbed to raise the temperature of your eye by 3 degree C. Assume the mass of an eye is 11 g and its specific heat capacity is 4.0 J/g/k
Answers
Answered by
DrBob222
Is that wavelength of 12 cm?
How much heat is needed to raise the temperature of the eye by 3 C?
That's q = mass eye x specific heat eye x 3 = about 130 J but you need to do it more accurately.
How much energy does each photon have? That's E = hc/wavelength
I estimate about 1.8E-24 J but check that.
Then 1.6E-24J/photon x #photons = 130
Solve for # photons.
How much heat is needed to raise the temperature of the eye by 3 C?
That's q = mass eye x specific heat eye x 3 = about 130 J but you need to do it more accurately.
How much energy does each photon have? That's E = hc/wavelength
I estimate about 1.8E-24 J but check that.
Then 1.6E-24J/photon x #photons = 130
Solve for # photons.
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