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christine hull

christine h.

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an auditorium measures 40.0m x 20.0m x 12m. The density of air is

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The cognitive revolution shifted the interest of psychologists from studying behavior to studying mental processes.

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Primary Secondary Tertiary Quaternary Previous Answers + Reset Help 1. structure describes the alpha-helices and beta-sheets that are formed by hydrogen bonding between backbone atoms located near each other in the polypeptide chain. 2. structure is achieved when a protein folds into a compact, three-dimensional shape stabilized by interactions between side-chain R groups of amino acids. 3. structure is the result of two or more protein subunits assembling to form a larger, biologically active protein complex. 4. structure is the sequence of amino acids in a protein.

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Gaussian Random Number and It's PDF • As mentioned before, the thermal noise signal is known to follow the zero-mean Gaussian distribution. Then what is the PDF of Gaussian random variable X with variance $\sigma^2$. - Let us start with an assumption that its formula follows exponential function of $x^2$ as: $f_x(x) = ae^{-bx^2}$ - There are two unknowns $a$ and $b$, and there should be two independent conditions to determine these unknowns: $i) \int_{-\infty}^{\infty} f_x(x)dx = 1$ $ii) \int_{-\infty}^{\infty} x^2 f_x(x)dx = \sigma^2$ - $a$ and $b$ can be found using the following integral formulas as $\int_{-\infty}^{\infty} e^{-x^2} dx = \sqrt{\pi}, \int_{-\infty}^{\infty} x^2 e^{-x^2} dx = \frac{1}{2}\sqrt{\pi}$ $\rightarrow a = \frac{1}{\sqrt{2\pi\sigma^2}}, b = \frac{1}{2\sigma^2}$ $\rightarrow f_x(x) = \frac{1}{\sqrt{2\pi\sigma^2}} e^{-x^2/(2\sigma^2)}$

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Unit 1 Assignment 1. (Chapter 1) Make a list of the foods and beverages you've consumed in the past two days. Look at each item on your list and consider why you chose the particular food or beverage you did. Did you eat cereal for breakfast because that's what you always eat (habit), or because it was the easiest, quickest food to prepare (convenience)? Did you put fat-free milk on the cereal because you want to control your energy intake (nutrition)? In going down your list, you may be surprised to discover exactly why you chose certain foods. 2. (Chapter 1) Using your list of foods and beverages from #1, compare your day's intake with the USDA Food Guide. Did you vary your choices within each food group? Did your intake match the daily recommended amounts from each group? If not, list some changes you could make to meet the recommendations. 3. (Chapter 2) How might you explain the importance of dietary fiber to a client who frequently experiences constipation? 4. (Chapter 3) Considering the health benefits of carbohydrate-rich foods, especially those that provide starch and fiber, what suggestions would you offer to a client who reports the following: eats only three servings of refined, sugary breads or cereals each day, eats one serving of vegetables (usually french fries) each day, drinks fruit juice once a day but never eats fruit, eats cheese at least twice a day but does not drink milk, eats large servings of meat at least twice a day, and eats hard candy 2-3 times/day?

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Match the nanoscientists/engineers with their areas of expertise. Indicate the one research area you believe has the greatest potential benefit to mankind and why. 1) Tito Huber: 2) Mamadou, S Dallo 3) Jamel Ali 4) Clayton Bates a) Duane Mitchell: Use of nanobots to deliver drugs to a tumor b) Enhancement of nanoproperties of SiAg nanocomposite films for detecting IR radiation c) Nanomedical treatment of a glioblastoma d) Removal of trace metals from water e) Use of nanobots to deliver drugs to a tumor f) Detect the energy and intensity of visible photons on the nanoscale

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For the following exercises, determine the extreme values and the saddle points. Use a CAS to graph the function.\ 341. $f(x, y) = ye^{x} - e^{y}$\ 342. $f(x, y) = x \sin(y)$

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A bicyclist travels 150m in 10.6 seconds. Assume the bicyclist motion is constant from the initial until time $t_1$. Assume that the velocity is constant for any time $t>t_1$ Define the following: • $L$ the length in meters the bike has traveled ($L = 150$) • $t_f$ The total time it takes the bike to travel 150 m ($t_f = 10.6s$) • $0<t<t_1$ the time during which the bike is accelerating with constant acceleration, $a$ a) Draw three separate graphs of the bikes motion form $t = 0$ to $t = t_f$ Make sure to label the axes of your graph and label $t = 0$ and $t = t_f$ • draw a position vs time graph $x(t)$ • draw velocity vs time graph $v(t)$ • draw an acceleration vs time graph $a(t)$ b) Without substituting any numbers and using the same variable as before, write an expression for $a$ in terms of a of the given quantities only ($L, t_f, t_1$). Show your work (neglect air friction when calculating.)

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The plots below show curves for the intensity in the diffracted beam versus excitation error s for a sample with different thicknesses, in the 2-beam condition. They are calculated using an extinction distance of 80 nm. From you understanding of how the intensity profile varies with thickness, identify them in order of increasing sample thickness. In the box below, write this sequence using their corresponding letters. Write this in the format: A,B,C,D,E,F.

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6. There are some mistakes in the following drawing. Please point out them, and propose improvements (10 points).

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