A child with a fever has an innerear temperature of 37.9 C. Treat the eardrum as a

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A child with a fever has an innerear temperature of 37.9 °C. Treat the eardrum as a blackbody with a radius of 2.5 mm.

(a) At what frequency ƒpeak is the most intense radiation emitted by the ear?

(b) At what rate is energy emitted by the child's ear into surroundings with the temperature 293 K? Use Equation 16-19 and assume the emissivity of the eardrum is 1.00.

(c) How many photons per second are emitted by the eardrum if they all have the same frequency as you found in part (a)?

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Physics

ISBN: 978-0321976444

5th edition

Authors: James S. Walker

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