Under nitrous oxide, NO, anesthesia, a small amount of NO diffuses into the middle ear through mucosal blood vessels and across the tympanic membrane, causing increase in gas pressure in the middle ear. Assume that an eardrum has an area of 0 mm2 and will normally vent excess pressure by opening the Eustachian tube when the collisional rate is greater than 9.0 x 1011 collision/s. Determine the minimum total pressure (in N/m2) of NO in the inner ear at body temperature (37.0°C) to initiate venting. Assume that venting has occurred several times so that the gas in the inner ear is pure NO. 1 Newton = 1kg ms2
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