Problem 37P

How many overtones are present within the audible range for a 2.14-m-long organ pipe at 20°C (a) if it is open, and (b) if it is closed?

Solution 37PIntroductionWe will first calculate the amount of water is evaporated in one minute, then calculate therequired energy to evaporate the same amount of water at body temperature with the suppliedvalue of latent heat. Now we can calculate the power in watt.Finally we will convert the watt to cal/day.SolutionStep 1In one breath the amount of water that is evaporated is 25 mgIn one minute we are taking 12 breaths.So the amount of water evaporated in one minute is 6m = 12 × (25 mg) = 300 mg = 300 × 10 kg