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Arsenic is released from an industrial stack at a rate of E=6 g/s. The effective height release is H = 50m. The mean wind speed is u = 3 m/s. Predict the ground-level arsenic concentrations 5 km downwind of the stack for two stability classes: B (moderately unstable) and E (slightly stable). If the RfD of arsenic is 3 x 10-4 mg/kg/day, and assuming an adsorption efficiency of 50%, is there an unsafe risk for an adult male breathing the air 5 km downwind of the stack in either stability class?
Nitrogen gas is heated in a steady-state, steady-flow process. The inlet conditions are 550 kPa, 35°C, and the exit conditions are 500 kPa, 1000°C. Kinetic and potential energy changes are negligible. Calculate the required heat transfer per kg of ni..
Explain why it is important for an organization to investigate workplace accidents Outline the factors that would influence the level of investigation required following a workplace accident
A model that involves changes in educational philosophy, curriculum and instructional techniques. What are the eight principles that are recommended by the model
Law enforcement has undergone significant changes in working with communities to solve crime problems and has encountered a number of challenges. Discuss these challenges, and describe what programs, projects, or other efforts have been employed by b..
What would the shape of the pulation pyramid for Arlinpogton National Cemetery in Virginia look like, where military personnel and their families are buried? Discuss in one or more complete sentences.
Do you think technology has contributed to the evolution of music? Make answer as breif as possible.
OSHA imposes obligations on the employer, but these obligations are not limitless. As federal administrations change, requirements change
A shortcoming of the aggregate expenditures model is that it does not:
Whole Food's strategy is well matched to the industry situation in which of the following ways? Which of the following best describes how well Whole Foods is performing from a strategic perspective? In 2007 what is Whole Food's financial conditio..
Why should a political stsyem be unitary, federal, or confederal? If the U.S. were to have another constitutional convention, would we keep a federal system or change it ? Why or Why not?
The majority of the codes used in the Current Procedural Terminology (CPT) may be found in the category one CPT codes. Determine the six sections of the category one CPT codes. Discuss the range of the code numbers
How would you apply the principles of infection control and regulatory requirements in the inspection of a tattooing operation?
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