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

Respuesta :

Dracula419 Dracula419

10-03-2016

POWER = ENERGY / TIME
time = energy / power
t = 1040 / 13
t = 80 mins

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