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Insects do not have lungs as we do, nor do they breathe through their mouths. Instead, they have a system of tiny tubes, called tracheae, through which oxygen diffuses into their bodies. The tracheae begin at the surface of the insect's body and penetrate into the interior. Suppose that a tracheae is 1.73 mm long with a cross-sectional area of 1.52 x 10-9m2. The concentration of oxygen in the air outside the insect is 0.786 kg/m3, and the diffusion constant is 1.70 x 10-5 m2/s. If the mass per second of oxygen is diffusing through a trachea is 1.96 x 10-12 kg/s, then find the oxygen concentration at the interior end of the tube.
The wavelength of light from a HeNe laser is 6.33 x 10-7 m. If the frequency of the light from the laser is 4.74 x 1014 Hz, find the speed of light. Express the answer in scientific notation with the proper number of significant digits.
consider from the authors of the course text the following quote progressive social change is about defending the weak
Can XYZ report bribe to the Department of Justice and have the German firm prosecuted under the Foreign Corrupt Practices Act?
You are negotiating a new labor contract with union officials. The contract covers a plant that has experienced operating losses over the past several years. What would Kant and Mill say?
Sketch a DOT (Department of Transport) placard, including UN/NA identification number, for tanker trucks containing each of the following hazardous materials.
Discuss the musical elements and the social factors (changes in politics and society) that put Beethoven as a bridge between the Classical and Romantic period styles. How did Beethoven influence Romantic composers? Name at least two composers influen..
The current price of a stock is 10. In six months it will go up to 10.5 or go down to 9.5 . r = 0.10 Determine if there is opportunity for arbitrage. If there is , describe a way to utilize it.
Define and compare at least two of the ethical theories described by Baase. What are their strengths? In what areas do they lack? Do these theories hold up within our modern, technological society?
The reactor is operating at 40% power. Under current conditions, the water leaving the core is at 400 degrees Fahrenheit, passes through the Steam Generator, and enters the core at 360 degrees Fahrenheit.
Which of the following is the BEST description of despair, according to Sartre?
Bromine (Br2) is produced by reacting HBr with O2, with water as a byproduct. The O2 is part of an air (21 mol % O2, 79 mol % N2) feed stream that is flowing sufficiently fast to provide 25% excess oxygen. The fractional conversion of HBr is 78%.
Let’s say you are interested in knowing how people feel about the use of the insanity plea during a criminal case. What is the best way to acquire an accurate sample of opinions in a big city? How about in a small rural town?
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