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alejandro segu-

alejandro s.

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Procedure 1. Un-hook the string from the Force Sensor, and allow the black rod to hang vertical. Make sure there is no motion, then click on Record. 2. Lift the rod up and re-hook the string onto the Force Sensor. Click on Stop. 3. Record the string tension, T. 4. Calculate the angle, $\theta$, shown in Figure 2. Note that this angle is not simply the angle measured by the sensor. Note: The equations for torque have been entered into the calculator, and you can edit the default values to enter your values. They assume that the torque is about the pivot, which makes the calculations simpler. However, the sum of the torques is zero about any point. 5. Calculate the torque caused by the string. $T_1 = T r_1 sin\theta$ 6. Calculate the total torque in the opposite direction caused by the weight. $T_2 = (mgr_2 + Mgr_1) cos\theta$ 7. Compare your clockwise and counter-clockwise torques with a % error. Do they cancel each other? 8. Use the other requirement for equilibrium to calculate the horizontal and vertical components of the force exerted by the pivot on the rod. 9. If the pivot exerts a force on the rod, why was this not included in the calculation of the torques? Force (N) -1.119N Angle (°) 145.89° string tension T = 1.119 N

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Comparing a firm’s net income to cash flow (prior to working capital accruals; CF) and net income to cash flow (after working capital accruals; CFO) gives the analyst Multiple Choice

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Marjorie Shostak's research with a small sample of !Kung women showed that, among these women, there were strong expectations of premenstrual depression knowing what phase of the menstrual cycle a woman was in was a good predictor of the woman's mood knowing what phase of the menstrual cycle a woman was was not a good predictor or the woman's mood or behavior the menstrual cycle had a stronger influence on these women's mood than did other factors such as the behavior of their husband and friends.

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A “free air sniff” occurs when a dog ______. determines there are no drugs present interacts with a suspect determines there are drugs present searches for contraband in a nonspecific place

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Activity 1: (20 mins) 1. Give the IUPAC name for the following compounds. a. b. c. Br 2. Draw the following compounds. a. (R, E)-8-bromo-8-metyldec-5-en-2-yne b. 3-chloro-2-methylhept-1-en-5-yne

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Question 5: 10 points A battery manufacturer claims that the lifetime of its batteries averages 20,000 hours. The standard deviation of lifetimes is known to be 4000 hours. You sample 100 batteries and will test the hypothesis that the mean lifetime is at least 20,000 hours versus the alternative that it is less. 1. If it is decided to reject Ho if the sample mean is less than 19,200, what is the level (a) of this test? Answer: $\alpha = 0.0228$ 2. If, in fact, the true lifetime is 18,800 hours, what is the power of the test?

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Glucose Glucose 6-phosphate

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6. [3/4.5 Points] DETAILS PREVIOUS ANSWERS An air freshener starts with 34 grams and then evaporates. In each of the following cases, write a formula for the quantity, Q grams, of air freshener remaining t days after the start. (a) The decrease is 2 grams per day. Q(t) = 34 - 2t (b) The decrease is 6% per day. Q(t) = 34(.94)$^t$ (c) The decrease is at a continuous rate of 7% per day. Q(t) = 34 - 34e$^{-0.06t}$

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Extra Credit: Use the following table for purposes of calculating the applicable basket of goods, index, and inflation as derived from the applicable index, with the base year 2015. For these calculations, you should treat Gasoline as produced outside the United States and imported for use by consumers in the United States. Year Bread Potatoes Beef Milk Coca-Cola Pizza Gas 2015 $ 1.98 $ 0.78 $ 5.26 $ 3.98 $ 5.98 $ 2.50 $ 2.21 2016 $ 1.98 $ 0.78 $ 4.97 $ 3.98 $ 6.48 $ 2.35 $ 2.49 2017 $ 1.98 $ 0.78 $ 4.96 $ 3.12 $ 7.68 $ 2.98 $ 2.43 2018 $ 1.98 $ 0.88 $ 4.96 $ 3.22 $ 7.68 $ 2.98 $ 2.93 2019 $ 2.19 $ 0.88 $ 4.77 $ 3.42 $ 7.68 $ 2.98 $ 2.26

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Consider an Artificial Neural Network (ANN) with four input nodes, two hidden nodes, and one output node. The ANN is used to classify submarines as either belonging to the American Virginia class or not. The activation function used for both the hidden layer and output layer is the sigmoid function. The ANN is trained using a dataset of submarines, where each submarine is described by the following features: Feature 1: displacement (in tons) Feature 2: length (in meters) Feature 3: maximum speed (in knots) Feature 4: weapon capacity (number of missiles) The weights and biases for each node are as follows: Input layer: Node 1: weight = 0.1, bias = 0.2 Node 2: weight = 0.3, bias = -0.1 Node 3: weight = 0.5, bias = 0.3 Node 4: weight = -0.2, bias = 0.4 Hidden layer: Node 1: weight = 0.4, bias = 0.1 Node 2: weight = -0.5, bias = 0.2 Output layer: Node 1: weight = 0.6, bias = 0.5 The sigmoid function is defined as follows: sigmoid(x) = 1 / (1 + exp(-x)) Suppose we have a submarine with the following features: Displacement: 7500 tons Length: 115 meters Maximum speed: 30 knots Weapon capacity: 30 missiles Using this ANN, determine the probability that this submarine belongs to the American Virginia class.

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