physics
A blow-dryer and a vacuum cleaner each operate with a voltage of 120 V. The current rating of the blow-dryer is 12 A, and that of the vacuum cleaner is 5.5 A.
Determine the power consumed by the blow-dryer.
Determine the power consumed by the vacuum cleaner.
Determine the ratio of the energy used by the blow-dryer in 19 minutes to the energy used by the vacuum cleaner in one-half hour.
Ebd / Evc =
the first two parts i got but the last im not sure what to do.
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Answers
Answer: The power consumed by the blow-dryer is 120 V × 12 A = 1440 W. The power consumed by the vacuum cleaner is 120 V × 5.5 A = 660 W. The ratio of the energy used by the blow-dryer in 19 minutes to the energy used by the vacuum cleaner in one-half hour is (1440 W × 19 minutes) / (660 W × 0.5 hour) = 17.3.
