A flashlight emits 2.9 W of light energy. Assuming a frequency of 5.2 1014 Hz for

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A flashlight emits 2.9 W of light energy. Assuming a frequency of 5.2 × 1014 Hz for the light, determine the number of photons given off by the flashlight per second?

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Physics

ISBN: 978-0321976444

5th edition

Authors: James S. Walker

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