A refrigerator has a power of 90 W and is left on for 24 hours. A hair dryer has
a power of 900 W and is on for 20 minutes. Which statement correctly
compares the energy used by these devices?
A. The refrigerator uses 6,696,000 J more than the hair dryer.
B. The refrigerator uses 3,224,000 J less than the hair dryer.
C. The refrigerator uses 1,080,000 J less than the hair dryer.
D. The refrigerator uses 7,776,000 J more than the hair dryer.
Answers: 1
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A refrigerator has a power of 90 W and is left on for 24 hours. A hair dryer has
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