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Maguire Hodgson

Maguire H.

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A policewoman is standing 80 feet away from a long, straight fence when she notices someone running along it. She points her flashlight at him and keeps it on him as he runs. When the distance between her and the runner is 100 feet he is running at 9 feet per second. At this moment, at what rate is she turning the flashlight to keep him illuminated? Include units in your answer.

A policewoman is standing 80 feet away from a long, straight fence when she notices someone running along it. She points her flashlight at him and keeps it on him as he runs. When the distance between her and the runner is 100 feet he is running at 9 feet per second. At this moment, at what rate is she turning the flashlight to keep him illuminated? Include units in your answer.

Calculus: An Integrated Approach to Functions and Their Rates of Change

Differentiation of Trigonometric…

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Ronald Prasad verified

Numerade educator

Balance the following reaction in basic solution. IO3–(aq) + MnO4–(aq) → MnO2(s) + IO4–(aq) What is the stoichiometric coefficient of H2O(l) and which side of the equation is it on in the balanced chemical equation?

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David Collins verified

Numerade educator

Balance the following reaction in basic solution. Mn2+(aq) + NaBiO3(s) → Bi3+(aq) + Na+(aq) + MnO4–(aq) What is the stoichiometric coefficient of OH–(aq) and which side of the equation is it on in the balanced chemical equation?

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Daniel Gosser verified

Numerade educator

Considering the concentrations of ions at equilibrium in the simulation, what is the molar solubility of strontium phosphate in water in nanomoles per liter (nM)? Note: the simulation shows single ions, but solubility is expressed in moles of ions! Carefully note the volume of the solution. Enter your response without units to the nearest 1 nM. 249.1 Based on your response to the last question, what is pKsp (–log10 Ksp) for strontium phosphate? If you haven't already, write the formula of strontium phosphate and a balanced equation for its dissolution in water. Write the equilibrium equation for this reaction and calculate Ksp based on the concentrations of ions apparent at equilibrium in the simulation. Enter your response without units to the nearest 0.1.

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