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Consider a tanker truck that crashes, ruptures, and spills a suite of contaminant into an underlying aquifer. The aquifer has a dry bulk density of 1.0 g/cc, a porosity of 40%, an isotropic hydraulic conductivity of 10^-3 m/s, a weight fraction of organic carbon of 0.03 (3%), and a thickness of 20m. The regional head gradient is 0.01. The spill included the following contaminents:
Hexachlorobenzene
Hexachloroethane
trichloroethene
chloroethane
cyclohexanol
1) What is the concentration of each contaminant at saturation?
2) After 1000 days, how far has the solute front (center of mass) for each contaminant traveled? Assume groundwater flow is only in one direction, directly down-gradient of the spill.
How do Marx and Weber explanation of inequality contribute to our understanding of POVERTY? Describe the various issues surrounding the definition of poverty in the U.S.A. as compared to the global definition of poverty. In your explanation, defin..
Thorndike (1949) believed that The Psychology of Wants, Interests, and Attitudes, published in 1935, was one of the worst of the 450-some articles, monographs, and books that he published during a long career.
Presentation: Sequencing and content The content in the presentation matches the outline presented in the introductory slide (or similar). Slides are organised in a logical manner so that content flows from one slide to the next, and the presentation..
what are your thoughts about this issue? Provide real world examples that you think demonstrate genetic and environmental influences on human behaviors.
Despite the best efforts of psychologists, psychiatrists, and medical researchers, psychological disorders appear to be as prevalent today as they ever were-if not more so.
Psychodynamic: unconscious need for attention, superego's reaction when uncomfortable with conversation, defense mechanism Neuroscience: family trait (heritability), mother and sister exhibit same behavior
What are the roles women in Islam? What kind of variation is there from country to country?
Do a quick search for the natural history of the following two parasites Ctenocephalidaes canis and Ancylostoma caninum. What is one main difference in their lifestyle? Mention one advantage and one disadvantage of their parasitic strategy.
The Milesians and Heraclitus interpreted experience as, Positivism states that our descriptions and explanations of phenomena must be anchored in sense experience.
Psychologists follow a code of ethics that has been developed by the APA. Explain the APA code in regard to research with human subjects. What happens when participants must be misled about the true purpose of the study
Calculate the allele frequencies and the expected Hardy-Weinberg genotypic frequencies.
How many degrees of latitude does the sun's most direct ray (this means the sun is directly overhead) travel per day?
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