Fall 2017 Exam #1(1).docx - BEN 201 Fundamentals of Bioengineering Exam#1 Fall 2017 Closed book and notes Things to Remember Show all work List any

Fall 2017 Exam #1(1).docx - BEN 201 Fundamentals of...

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BEN 201: Fundamentals of Bioengineering Exam #1 Fall 2017 Closed book and notes Things to Remember Show all work List any assumptions with your reasoning behind the assumption Show the equation that you are using, not just the math Box your final answer #1. Consider a 155 lb m woman who has a total foot imprint area of 400 cm 2 . She wishes to walk on the snow, but the snow cannot withstand pressure greater than 0.07 psi. Determine the minimum size of the snowshoes needed (imprint area per foot) to enable her to walk on the snow without sinking. [ANS. 2215 in 2 , 15.4 ft 2 or 1.43 m 2 ]
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#2. The air conditioner has broken and the temperature of the lab is 80.5 o F. This caused the label to come off a cylinder of gas stored in the laboratory. You know only one species of gas is contained in the cylinder, but you do not know whether it is hydrogen, oxygen, or nitrogen. To find out, you evacuate a 0.005 L flask, seal it and weigh it, then let gas from the cylinder flow into it until the pressure gauge reads 1.00 atm. The flask is reweighed and the mass of the added gas is found to be 13.0 g. What kind of gas is it? [ANS: It’s O 2 ]
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  • Fall '17
  • BEN201

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