courtneydemko courtneydemko
  • 10-03-2016
  • Physics
contestada

a hair curling iron uses 13 watts of power, how long must it operate to do 1040 joules of work

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Dracula419
Dracula419 Dracula419
  • 10-03-2016
POWER = ENERGY / TIME
time = energy / power
t = 1040 / 13
t = 80 mins
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