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Lara R

Lara R.

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The figure shows a person's foot. In that figure, theAchilles tendon exerts a force of magnitude F = 720 N.What is the magnitude of the torque that this forceproduces about the ankle joint?

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2. Find the value of \( G^{\prime}(1)-G(1) \) where \[ G(x)=\int_{1}^{x^{2}} \sqrt{1+t^{3}} d t \]

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2. Find the value of \( G^{\prime}(1)-G(1) \) where \[ G(x)=\int_{1}^{x^{2}} \sqrt{1+t^{3}} d t \]

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Use the definition of the integral to evaluate the given integral.Integral 2x-x^3 dx [1,3]

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Use the definition of the integral to evaluate the given integral.

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Kerosene, a common space-heater fuel, is a mixture of hydrocarbons whose “average” formula is C12 H26 .(a) Write a balanced equation, using the simplest whole-number coefficients, for the complete combustion of kerosene to gases.(b) If H rxn  1.50 10 4 kJ for the combustion equation as written in part (a), determine H of kerosene. f(c) Calculate the heat produced by combustion of 0.50 gal of kerosene (d of kerosene  0.749 g/mL).(d) How many gallons of kerosene must be burned for a kerosene furnace to produce 1250. Btu (1 Btu  1.055 kJ)?

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For each process, state whether H is less than (more negative), equal to, or greater than E of the system. Explain.(a) An ideal gas is cooled at constant pressure.(b) A mixture of gases undergoes an exothermic reaction in a container of fixed volume.(c) A solid yields a mixture of gases in an exothermic reaction that takes place in a container of variable volume.

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Suppose that you are driving a car with initial velocity of 56 ???????? and suddenly you see han old man that wants to cross a street about 100 meters away and hit the breaks and your car decelerates at 1.25 ???? . Did you run the poor old man?

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Identify each of the following reactions as being a neutralization, precipitation, or oxidation– reduction reaction.a) Fe2O3(s) + 3CO(g) →2Fe(s) + 3CO2(g)b) Na2SO4(aq) + Hg(NO3)2(aq) →HgSO4(s) + 2NaNO3(aq) c) CsOH(aq) + HClO4(aq) →Cs(aq) + 2H2O(l) + ClO4 (aq) d) Mg(NO3)2(g) + Na2S(aq) →MgS(s) + 2NaNO3(aq)

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Limestone (calcium carbonate) is insoluble in water but dissolves when a hydrochloric acid solution is added, why? Write balanced total ionic and net ionic equations, showing hydrochloric acid as it actually exists in water and the reaction as a protontransfer process.

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