Numerade

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C. Now, we'll flip the problem around. How much of the 80 °C liquid must evaporate for the remaining liquid to end at 60 °C? To answer this, you will calculate the number of particles left in the liquid. 1. Begin by writing an expression for $\Delta U = U_f - U_i$ in terms of $T_i$, $T_f$, $n_i$, and $n_f$. [Hint: Only write down the expression here; it is best to plug values a bit later in the process.] 2. Next, write an expression for the amount of energy carried away by the evaporating molecules (in terms of the heat of vaporization, $n_i$, and $n_f$). Relate this energy to the change in energy $\Delta U$ of the remaining liquid obtained (Hint: pay special attention to the signs of each energy change). Using this relation to find the value of $N_f$ for $T_f = 60$ °C. 3. Determine the fraction $\frac{N_i - N_f}{N_i}$ or $\frac{n_i - n_f}{n_i}$ (they are the same) of the drink that evaporated.

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Type ______ motor units typically contain more muscle fibers, meaning that the force of contraction from this type of motor unit will be ___________. II, less I, less II, more I, more

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Nonverbal cues are: continuous or analogic communication always silent intermittent commonly accepted among cultures

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Efficiency in Per Cent 100 600 680 70 60 50 Vaelow 100 q.p.m. 40 500 1,000 Over 10,000 g.p.m. -3,000 to 10,000 g.p.m. 1,000 to 3,000 g.p.m. 500 to 1,000 g. p.m. 200 to 500 g. p.m.- 100 to 200 g.p.m. 1 2,000 3,000 4,000 10,000 15,000 Values of Specific Speed ng r.p.m. yg. p.m. H Center of Rotation Radial Francis Homework Mixed Flow Center of Rotation Propeller Courtesy Worthington Pump & Machinery Corp. Approximate relative impeller shapes and efficiencies as related to specific speed. EML 4127 D. Moslemian 1. Determine the specific speeds of the following single-stage pumps and specify the type of pump which probably be used for each. Pump r.p.m. g.p.m. 1150 3500 885 12000 675 20000 625 9000 Total Head (ft) 100 15 50 18 2. A six-stage pump delivers 1500 g.p.m. against a net pressure rise of 700 lb per square in. What is the specific speed if it rotates at 1750 r.p.m.? 3. It is desired to pump 2800 g.p.m. of water against a head. of 175 ft. What approximate operating speed would give the best efficiency.

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Carrier-mediated transport is necessary when Group of answer choices diffusion will not allow adequate amounts of a substance to enter the cell. movement into the cell is against a concentration gradient. the level of nutrients in nature is very low. nutrient concentration is very low in the environment, is higher inside of the cell, or diffusion is not possible.

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If the conclusion follows from the premises, then the argument is

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similarities and differences between amylopectin, amylose and cellulose, discuss how each polysaccharide impacts our health?

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Which of the following are of interest to psychologists in the discipline of social psychology? the cognitive response of robots measures of prejudice common threads of humanity synapse processing speed

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What is the relationship between the two variables below? X 0 1 2 3 4 5 Y 65 55 45 35 25 15 direct or positive inverse or negative zero undefined

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(1 point) Evaluate the definite integral by interpreting it in terms of areas.\\ $\int_3^6 (2x - 8)dx$

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manuel a.