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laura alvarado

laura a.

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Dynamic maintenance of a steady internal state produced and maintained by physiological systems is known as gain Dr. Dunism equilibrium homeostasis

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Question One Water is to be transported from one tank to another using a 10 m pipeline of inside diameter 25 mm. A centrifugal pump is to be used to transport the water and is positioned below the first tank whose free surface is 2 m above the freely discharging outlet. Determine the duty point for the pump characteristic given below. The fanning friction factor may be assumed to be 0.005.Allow for entrance and exit loses Discharge,m'min 0000 0.0080.0120.0180.024 Head, m 3.5 3.2 3.0 2.4 1.4

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1. Identify a polymer product around you. 2. Write 3-4 specific properties needed for the particular application for which the product is used. 3. Based on you learning so far and further reading, identify 3-4 polymers/copolymers/polymer blends/polymer composites which might be suitable to make this product, along with justifying your choice. 4. Further elaborate the top 2 polymers on your list in terms of their structure, properties and other applications. You can also make a comparison table for this purpose.

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Write a function that takes as input N, v, k: a weighted, undirected network N, in the form of a (numpy array) adjacency matrix, and a single specified node v in the network, and a threshold weight k. Your function outputs a list of all of the nodes that can be reached from v traveling only along edges that have weight ? k.

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1. Declare and initialize an integer named length. You will use this integer variable to control the size and shape of animations later. You will get the value of this integer from the user. The user must enter an odd integer. If the user enters an even integer, you must let the user know that they need to enter an odd number and ask for the value again. You must keep on asking the value until the user enters an odd integer. See included video. 2. Declare an enumeration constant with values Square, Triangle, Pentagon, Sentence and Quit and assign integer values 1 to 5 to them respectively. 3. Generate a seeded random integer in the range of 33 to 64, inclusive. This integer is the ASCII value of the character that you will use to generate the animations.

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Problem 1. (Using the Critical Reynolds Number to classify flow types) Consider the statements given in (i) and (ii) below. Compute the Reynolds number Re = UL/v for each of the flow field situations listed below. Compare the Reynolds number that you computed to the given experimentally-based critical Reynolds number for rough pipe and duct flow, which is Recrit = 2000, to determine if the flow field is most likely laminar or turbulent. Situation (i): Liquid Newtonian Honey, at room temperature of 20°C, flows out of a 1 cm diameter straw with an average speed of 1 cm/s. Take the kinematic viscosity of honey at room temperature to be v(20°C) = 1.42 x 10^-2 m^2/s. Situation (ii): Water at 20°C flows through a pipe with a circular cross-section area of 2.57 x 10^-3 m^2. The water has an average velocity of 10 m/s. Take the kinematic viscosity of water at room temperature to be approximately v(20°C) = 10^-6 m^2/s. (a) Situations (i) and (ii) are both laminar flows. (b) Situation (i) is laminar flow; Situation (ii) is turbulent flow. (c) Situation (i) is turbulent flow; Situation (ii) is laminar flow. (d) Situations (i) and (ii) are both turbulent flows. (e) At least one of the two situations is too close to give a definitive answer.

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Q3. In a laboratory creep experiment at 1000°C, a steady state creep rate of 1.5x10$^{-6}$ sec$^{-1}$ is observed in nickel. When the experiments are performed under the same stress at 800°C, the observed creep rate is 1.0x 10$^{-6}$ sec$^{-1}$. Predict the creep rate at a service temperature of 600°C at this stress level. When the experiment is performed with stress two times higher and temperature of 800°C, the creep rate is doubled. Answer the following. 12. The activation energy for steady state creep in units of k (Boltzmann constant) is a. 6827.5 k b. 2769 k c. 1621.8 k 13. The creep rate at 600°C for the same stress level is a. 5.5x10$^{-6}$ b. 0.55x10$^{-6}$ c. 0.275x10$^{-6}$ 14. The activation energy for self diffusion is expected to be a. 6827.5 k b. 2769 k c. 1621.8 k 15. The creep exponent, n, has a value of a. 0.5 b. 1.0 c. 2.0 16. The activation energy for creep at a higher stress is expected to be a. higher b. lower c. same

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35) If $f(x) = px^2 - qx + k$, the turning point of the parabola is at: ? $x = \frac{q}{2p}; y = k - \frac{q^2}{4p}$ ? $x = -\frac{q}{2p}; y = k - \frac{q^2}{4p}$ ? $x = \frac{q}{2p}; y = k$ ? $x = -\frac{q}{2p}; y = k$

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A football and toy train together weigh 360g. Three footballs and two toy trains weigh 810g. Find the weight of a toy train.

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Solve the right triangle. B 49° C 4 D Write your answers as integers or as decimals rounded to the nearest tenth. BD = BC = m?D =

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