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david cummings

david c.

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As we move away from a point charge, electric field lines get closer to one another. True False

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The balanced equation for the reaction between aqueous ammonium sulfate and aqueous barium acetate is (NH$_4$)$_2$SO$_3$(aq) + Ba(C$_2$H$_3$O$_2$)$_2$(aq) $\rightarrow$ BaSO$_3$(aq) + NH$_4$C$_2$H$_3$O$_2$(aq). (NH$_4$)$_2$SO$_4$(aq) + Ba(C$_2$H$_3$O$_2$)$_2$(aq) $\rightarrow$ BaSO$_4$(aq) + 2 NH$_4$C$_2$H$_3$O$_2$(s). NH$_4$SO$_4$(aq) + BaC$_2$H$_3$O$_2$(aq) $\rightarrow$ BaSO$_4$(s) + NH$_4$C$_2$H$_3$O$_2$(aq). (NH$_4$)$_2$SO$_4$(aq) + Ba(C$_2$H$_3$O$_2$)$_2$(aq) $\rightarrow$ BaSO$_4$(s) + NH$_4$C$_2$H$_3$O$_2$(aq). (NH$_4$)$_2$SO$_4$(aq) + Ba(C$_2$H$_3$O$_2$)$_2$(aq) $\rightarrow$ BaSO$_4$(s) + 2 NH$_4$C$_2$H$_3$O$_2$(aq).

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How many grams of oxygen are present in 4.18x10^22 molecules of carbon dioxide

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OABC is a quadrilateral. The vector \overrightarrow{OA} = a. The vector \overrightarrow{AB} = b. M is the midpoint of OA. \overrightarrow{OC} = 3\overrightarrow{AB} Given that \overrightarrow{OX} = \lambda\overrightarrow{OB} and \overrightarrow{MX} = \mu\overrightarrow{MC} use a vector method to find the value of \lambda and \mu. ? = ? =

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STR of school A increases from 16 to 18, what will be the change of Testscore for this school?

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A pebble that is 3.81 m from the eye of a tornado has a tangential speed of 1.24 m/s

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5. Explain whether each of the following is labor, capital, or a natural resource. 1. An unemployed factory worker 2. A college professor 3. The library building on your campus 4. An untapped deposit of natural gas 5. The local power plant operated by PECO energy

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Over the past two years, the US dollar has appreciated against most other currencies in the world. Discuss whether each of the following groups are happy or unhappy about the US dollar appreciating. a. Chinese investors who bought US government bonds (5 marks) b. The Brazilian manufacturing industry (5 marks) c. Japanese tourists planning a trip to the Unites States (5 marks) d. A worker in Hong Kong trying to purchase property in New Zealand (5 marks)

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A copper wire is used to create a circular loop, with a length of 0.651 m. The resistivity of the copper is 1.7x10^-8 Ωm, and the diameter of the wire is 0.001 m. A uniform magnetic field is placed perpendicular to the loop, but the intensity is varying by a magnitude of 15 mT/s. What is the power generated in the loop? Give the answer in Watts.

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Consumption Expenditures: 500 billion Wages and Salaries: 400 billion (Gross Private) Investment Expenditures 80 billion Government Expenditures on Goods and 100 billion Services Taxes 70 billion Imports 50 billion Exports 30 billion a (2 points) Calculate GDP _______________ b (2 points) If the population is 35 million what is the GDP per capita _______________ (be careful with the units). c (2 points) If the GDPdeflator this year was 1.25 what is the value of real GDP? _______________

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