Find the direction of the electric field at the origin
A +20-nC point charge is placed on the x axis at x = 2.0 m, and a -25-nC point charge is placed on the y axis at y = -3.0m. What is the direction of the electric field at the origin?
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The Wall Street Journal's Shareholder Scoreboard tracks the performance of 1000 major U.S. companies (The Wall Street Journal, March 10, 2003). The performance of each company is rated based on the annual total return, including stock price change
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The standard recipe used in an exercise uses 3.0 mL of 0.25% phenanthroline solution in 100 mL of final solution to generate the red iron-phenanthroline complex which is determined colorimetrically.
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When reacting cyclopentadiene with maleic anhydride, why is theendo-adduct formed exclusively? Why does the exo-adduct not form?Also, Why is cyclopentadiene must be freshly distilled before thereaction is carried out?
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Problem 1: Identify a specific theory of cognitive or moral development, and summarize the major assumptions.
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