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alfredo sevillano

alfredo s.

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1. A factory discharges waste water at 50\textdegree C at a rate of 1,000kg/s. An inventor claims to have devised a heat engine which can produces 10MW of net-power from the warm waste water. If the environment temperature is 25\textdegree C, determine (a) the thermal efficiency of the heat engine, (b) the maximum possible thermal efficiency, and (c) determine whether this plant is reasonable or not.

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According to Phelps, if unemployment falls below the equilibrium level, inflation tends to rise.

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Find the electric potential $\phi(\mathbf{r})$ (up to quadrupole terms) of a set of six point charges that set symmetrically about the origin as shown. (10%)

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Question 1 (4 marks) A certain system given x(t)----->h(t)----->y(t) Knowing that h(t) given by and x(t) given by use convolution 1- Find y(t) 2- sketch y(t) Question # 2 (6 marks) For system shown knowing that h1(t) is a derivative operation \textquotesingle The output of h1 is the derivative of its input\textquotesingle and h2 is time shifting poeration \textquotesingle the output its delayed by 2 second relative to its input\textquotesingle Vin(t) = r(t) - 2 r(t-1) + r(t-2) Find: 1- The Total energy in input sigansl 2- Over all transfer function 3- Vo(t)

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Problem 4: The particle A is mounted on a rigid rod pivoted at O and is therefore constrained to move in a circular arc of radius r. Determine the speed of A in terms of the downward velocity $v_B$ of the counterweight B for any angle $\theta$.

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Question 44 Which of the following is an accurate description of the role played by hemoglobin in $CO_2$ transport? A Hemoglobin acts as a pH buffer by removing $H^+$ to form hemoglobinic acid. B. Hemoglobin binds to $HCO_3^-$ and moves it to the plasma. C Hemoglobin combines with $CO_2$ to form carbaminohemoglobin. D. Both A and C are correct. E. Both B and C are correct.

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Suppose that a red die and a green die are tossed and the numbers on the sides that face upward are observed. (a) What is the probability that the numbers add up to 11? (b) What is the probability that the sum of the numbers is less than 4? (a) The probability that the sum of the numbers is 11 is (Type an integer or a simplified fraction) (b) The probability that the sum of the numbers is less than 4 is (Type an integer or a simplified fraction)

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There are both similarities and differences between GC method development and HPLC method development. Describe and explain one way in which GC method development is easier than HPLC method development, and describe and explain one way in which HPLC method development is easier than GC method development.

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a. Find the inverse of the following function: $y = 7 - \frac{4}{x}$ b. Use one (pick one!) of the following three methods to argue that you have in fact found the correct inverse: • show that they are mirror images around the line $y = x$ • use a table of values to show that the x and y-values change places • show that they undo each other algebraically

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Oblique Balance Design Project You are on a design team working on an Oblique Balance. An Oblique Balance can be constructed with two strings and a rod as shown in the image. The strings are tied at a pivot point and at the ends of the rod. A known reference mass is placed on one end of the rod, then the equilibrium angle of the rod would indicate the mass of the object placed on the other end of the rod. Assuming you can measure the angle within plus or minus one degree, the precision of the weight/mass measurement should be within 6%. The measured weight range should be from 1/2 to 2 times the reference weight. You will need to plot the angle versus the weight ratio for various design considerations. Precision; = \frac{W_{i-1} - W_i}{W_i} \cdot 100\% where $W_i$ is the measured mass/weight and $i - 1$ is one degree less than $i$. Tip Angle = -10 Weight on Right = 1.87939 * Weight on Left Examine the impact of varying the design on the accuracy and range of measurement. Conceptually consider errors due to real-world issues like string stretching, production accuracy, or rod weight. Submit your team design and rational including plots in the project report. Plots should include the angle vs weight for various designs and issues. A plot of the precision (differences in reading for 1-degree change divided by the reading). Submit the code used to make the plots and the peer evaluation.

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