At 3 P.M., a dry-bulb thermometer reading is 66 degrees F. The wet-bulb reading is 66 degrees F. What is the relative humidity? Why?

1 Answer
James J.
Jan 30, 2018

100%

Explanation:

The wet bulb temperature is the temperature that is achieved when there has been all the evaporative cooling for the air. If the numbers are the same then no evaporative cooling took place, which means that water wasn't able to evaporate. The only reason for that would be if the air was saturated which means 100% relative humidity.

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