Homework Answers Page 10718

• A metal plate weighing 200g is balanced in mid air by throwing 40 balls per second vertically upward from below.After collision ball rebounds with the same speed.What is the speed with which balls strike the plate.(mass of each ball-200g)?

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  Algebra

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• How does gas exerts pressure on its container?

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  Chemistry

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• Why is cos(0) = 1?

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  Geometry

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• How do specific heat capacity and thermal conductivity differ?

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  Chemistry

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• A perfect cube was found to have a mass of 16.2 g . If the density of aluminum is 2.7 g/cm what is the length of each side of aluminum?

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  Chemistry

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• How do you Use the trapezoidal rule with four equal subdivisions to approximate a definite integral?

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  Calculus

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• What is the molecular geometry of BCl3? Draw its VSEPR and Lewis structure.

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  Chemistry

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• What did the 14th Amendment do? How did it attempt to protect African Americans?

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  History

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• What were the results of the Battle of Saratoga?

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  History

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• What are the different types and uses of telescopes?

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  Science

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• What was the significance of the Second Battle of the Marne?

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  History

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• What is a mole and why are moles used?

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  Chemistry

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• In ocean water, is salt a solvent or a solute?

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  Chemistry

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• Write the correct chemical formula to distinguish between?..... calcium sulfide and calcium hydrogen sulfide

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  Chemistry

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• How do I find the directrix of a hyperbola?

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  Precalculus

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• How do you calculate concentration of ions in a solution?

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  Chemistry

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• Difference between magma and lava

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  Science

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• The average height of five men is 68 inches. If one man is 70 inches tall and three others have an average of 67 inches, the height of the fifth man, in inches, is? a) 68 b)69 c) 70 d) 71

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  Algebra

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• Given that Ka for HBrO is 2.8 × 10-9 at 25 °C, what is the value of Kb for BrO– at 25 °C? Given that Kb for (CH3)2NH is 5.4 × 10-4 at 25 °C, what is the value of Ka for (CH3)2NH2 at 25 °C?

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  Chemistry

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• How would you define density?

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  Chemistry

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• A substance Q conducts electricity both when solidand molten. What is Q?

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  Chemistry

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• What is the function of the integumentary system?

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  Psychology

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• What are the three psychosexual stages?

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  Psychology

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• What is the isomer, monomer, and polymer for carbohydrates?

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  Biology

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• How does Newton's third law work when you walk?

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  Physics

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• Because gravity on is about one-third of that on Earth, could you infer that Mars has more mass than Earth?

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  Physics

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• What is a binary acid and how do you name them?

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  Chemistry

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• How is the confidence interval formula for the slope similar to other confidence intervals that we have calculated?

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  Statistics

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• How do you simplify ##sqrt(44)##?

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  Algebra

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• How do you verify ##(sin^2x - cos^2x)/(sinx + cosx)=sinx-cosx##?

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  Geometry

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• What is the molecular weight of H2SO4?

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  Chemistry

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• What is the past and past participle of the word "show"?

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  English

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• What happened as a result of the Opium War?

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  History

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• What is 66% as a fraction in simplest form?

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  Algebra

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• The sum to infinity of a geometric series is 32. The sum of the first four terms is 30 and all the terms are positive. What's the difference between the sum to infinity and the sum of the first eight terms?

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  Precalculus

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• A jewelry box contains two gold hoop earrings and two silver hoop earrings. You randomly choose two earrings. What is the probability that both are silver hoop earrings?

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  Statistics

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• How much 2% glucose solution can be made from 50.0 mL of 35% glucose solution?

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  Chemistry

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• Who was Mansa Musa? Why is he important?

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  History

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• Are all unicellular organisms haploid? If not, how do we know a cell is haploid or diploid?

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  Biology

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• How many obtuse angles does a triangle have?

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  Geometry

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• What is the conjugate acid of ClO4-?

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  Chemistry

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• What are some examples of autosomes?

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  Biology

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• What is delta G?

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  Chemistry

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• between which to values is the square root of 65?

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  Algebra

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• If I had 256 fluid ounces of juice how many half gallons would I have?

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  Algebra

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• What is the substrate and product for the enzyme Lipase?

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  Biology

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• What is 20 degrees celsius in fahrenheit?

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  Physics

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• What is tissue, an organ and an organ system? What is an example of each?

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  Psychology

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• How does kinetic molecular theory explain the Charles' law?

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  Physics

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• Why did Daniel Shays try to attack a federal building that held weapons?

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  History

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