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MassProblems

# MassProblems - the hot water heater How full(in percent is...

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1 ME 201 Thermodynamics Conservation of Mass Practice Problems 1. A human being can blow air out of their mouth at a rate of 10 -4 kg/s. How long will it take for this human to blow up a balloon to a volume of 5 x 10 -4 m 3 ? The air may be taken to be at 311 K and 110 kPa. 2. Consider a 40 gallon hot water heater. Over a fifteen minute time period hot water flows out of the hot water heater at 0.75 kg/s and cold water at 0.5 kg/s flows into
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Unformatted text preview: the hot water heater. How full (in percent) is the hot water heater at the end of fifteen minutes? You may take the water temperature to be 85ºC. 3. If it takes 12 seconds to empty a one liter bottle, what is the mass flow rate of soda leaving the bottle? You may take the density of soda to be 850 kg/s....
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