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At what temperature does still air cause the same chill factor as $-5^\circ\textrm{C}$ air moving at 15 m/s?
Solution Video

# OpenStax College Physics Solution, Chapter 14, Problem 46 (Problems & Exercises) (0:52)

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Video Transcript
This is College Physics Answers with Shaun Dychko. Question 46 asks at what temperature does still air cause the same chill factor as minus 5 degrees Celsius air moving at 15 meters per second? So we look at the speeds here in bold along this row so this is 15 meters per second here and we follow it down to air that's at minus 5— not considering the fact that it's moving— and then here where they meet where the 15 column meets the minus 5 degrees Celsius row, this is the temperature of still air that would have the same chill factor. So air that is still at a temperature of minus 26 degrees Celsius will give the same chill factor as air that's minus 5 degrees Celsius but moving at 15 meters per second.