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Sailor Marss<3
Lv 4
Sailor Marss<3 asked in Science & MathematicsPhysics · 1 decade ago

A 1500-W hair dryer connected to a 120-V outlet runs for 3 min(180s). How many kWh of energy were used?

(1kWh=3 600 000 J)

2 Answers

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  • billrussell42
    Lv 7
    1 decade ago
    Favorite Answer

    1500 watts = 1.5 kw

    1.5 kw x 3 min x 1 hour/60 min = 0.075 kW-hour

    .

  • ?
    1 decade ago

    1.5 kw * .05 hr = 0.075 kwh

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