Power output of devices such as electric motors is sometimes expressed in horsepower instead of watts. How many watts equal one horsepower?

1. Horsepower is an older, non-SI unit of power still used for devices like motors. 2. The conversion factor given is 1 hp = 746 W. 3. 100 W and 1000 W are round numbers that do not match this specific conversion factor. 4. 550 W is not the conversion given, so 746 W remains the correct value for one horsepower. _Source: OpenStax College Physics (CC BY 4.0), Ch 7 "Work, Energy, and Energy Resources", section 7.7 Power_