A person does not apply sunscreen and has 0.43 m2m2 of skin exposed to the sun for 1.00 hh. Calculate the total energy (in joules) absorbed by the skin. Assume there are 3.066×1021 photons/(m2⋅s)photons/(m2⋅s) (photons per square meter-second). Assume an average wavelength of 320 nmnm to calculate the energy of a UV photon. Assume that half of the photons that strike the skin are reflected. Express the energy in joules to three significant figures
A person does not apply sunscreen and has 0.43 m2m2 of skin exposed to the sun for 1.00 hh. Calculate the total energy (in joules) absorbed by the skin. Assume there are 3.066×1021 photons/(m2⋅s)photons/(m2⋅s) (photons per square meter-second). Assume an average wavelength of 320 nmnm to calculate the energy of a UV photon. Assume that half of the photons that strike the skin are reflected. Express the energy in joules to three significant figures
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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A person does not apply sunscreen and has 0.43 m2m2 of skin exposed to the sun for 1.00 hh. Calculate the total energy (in joules) absorbed by the skin. Assume there are 3.066×1021 photons/(m2⋅s)photons/(m2⋅s) (photons per square meter-second). Assume an average wavelength of 320 nmnm to calculate the energy of a UV photon. Assume that half of the photons that strike the skin are reflected.
Express the energy in joules to three significant figures
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