A hair dryer uses 75,000 joules of energy in 60 seconds. What is the power of this hair dryer? Physics Work and Energy Power 1 Answer GiĆ³ Jun 7, 2015 Power is the rate of transfer of energy with time or, more simply, the energy transferred in 1 second. In your case: Power#=75000/60=1250 W# (Power is measured in Watt, #W#, which has units of Joules/seconds) Answer link Related questions What is power? How are work and power related? How are force and power related? How does power affect work? How does power differ from energy? How does power change with voltage? How does power relate to torque? How does work relate to conservation of energy? How does work relate to gravitational potential energy? What is horsepower? See all questions in Power Impact of this question 7284 views around the world You can reuse this answer Creative Commons License