During an aerobics class-how much water is lost
During an aerobics class, a person gives off 1200 kJ of heat energy in 45 minutes. Assuming all this energy is used to evaporate water from the skin, how much water is lost? The latent heat of evaporation is 2,300 kJ/kg.
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A source moving with a speed 34 m/s, emits a sound wave with a frequency f = 351 Hz. Determine the frequency detected by a stationary observer if the speed of sound is v = 334 m/s and the source is moving towards the observer.
Ddetermine (a) the volumetric flow rate of water through the hose and nozzle, (b) the mass flow rate of water through the hose and nozzle.
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