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Mr. Fin uses a 710 W hairdryer for 14 minutes per day every day to dry

  1. Apr 19, 2013 #1

    Tj8

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    Mr. Fin uses a 710 W hairdryer for 14 minutes per day every day to dry his thick, long locks. If the power company charges $0.11/kWh, how much does it cost per month (30 days) to operate the hairdryer?


    2. Relevant equations

    I=q/t

    3. The attempt at a solution
     
  2. jcsd
  3. Apr 19, 2013 #2
    How many kW is 710 W?
    How many hours is 14 min?
     
  4. Apr 19, 2013 #3
    That is not a relevant equation here....
     
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