Ablow-dryer and a vacuum cleaner each operate with a voltage of 120 v. the current rating of the blow-dryer is 11 a, while that of the vacuum cleaner is 4.4 a. determine the power consumed by (a) the blow-dryer and (b) the vacuum cleaner. (c) determine the ratio of the energy used by the blow-dryer in 17 minutes to the energy used by the vacuum cleaner in 44 minutes.

The average atmospheric pressure on earth is approximated as a function of altitude by the relation patm = 101.325 (1 − 0.02256z)5.256, where patm is the atmospheric pressure in kpa, and z is the altitude in km with z = 0 at sea level. determine the approximate atmospheric pressures at atlanta (z = 306 m), denver (z = 1610 m), mexico city (z = 2309 m), and the top of mount everest (z = 8848 m).