If a hair dryer is rated at 1500 W, how much energy does it require in 5 minutes?

a.300 J


b.1500 J


c.7500 J


d.450,000 JIf a hair dryer is rated at 1500 W, how much energy does it require in 5 minutes?
1 joule is 1 watt-second


E = 1500w x 5 min x 60 sec/min = 450000 Joules (d)





.If a hair dryer is rated at 1500 W, how much energy does it require in 5 minutes?
1500/12*3600000





(1 500 / 12) * 3 600 000 = 450 000 000 J = 450,000 kJ = 450 mJ

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