emmanuel (ae8272) – hw07-Waves and vibrations – dickerson – (28763) This print-out should have 47 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 1 004 (part 4 of 6) 10.0 points What is its frequency? Correct answer: 6.1216 Hz. 001 (part 1 of 6) 10.0 points A spring with a spring constant of 50.3 N/m is attached to different masses‚ and the system is set in motion. What is its period for a mass of 2.8 kg? 1 = 6
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Case Study: Property Purchase Strategy Table of Contents Main Report 3 Introduction3 Decision Analysis 3 Increasing the expected payoff 5 Conclusion 5 Appendix6 Decision Tree6 Calculation of probabilities 7 Calculation of expected payoff8 Relationship between the expected payoff and amount of bid9 Introduction Decision analysis is an integral and powerful component in the decision making process‚ and can be used to determine the optimal decision alternative according to the criterion
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absorption by RG at 400-500nm is a result of transition of electrons from ground state (S0) to second singlet excited state (S2). In RG this transition is very strong corresponding to large delocalisation of electrons. Due to near symmetry structure of RG the transition from ground state to first single excited state (S1) is dipole forbidden (H. A. Frank‚ et.al 1991). Instead the S2 state of RG has a high dipole moment therefore readily absorb
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Unit I Laws of Motion 1. A man of mass 70kg stands on a weighing machine in a lift which is moving (a) upwards with a uniform speed of 10m/s. (a) downwards with a uniform acceleration of 5m/s2 . (a) upwards with a uniform acceleration of 5m/s2. What would be the readings in each case? (d)what would be the reading if lift mechanism failed and it hurtled down freely under gravity? 2. A shell of mass 0.2kg is fired by a gun of mass 100kg. If the muzzle speed
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line y = Rx + ε to the data ii. Add this line to your scatterplot. ¯ iii. Estimate Y with ¯ ¯ Y R = RX ¯ where X is the population mean value of x. iv. Compute the residuals ek = yk − yk = yk − Rxk v. Compute the variance of the residuals s2 e
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Decision Analysis Example Consider the following problem with three decision alternatives and three states of nature with the following payoff table representing profits: States of Nature s1 s2 s3 d1 4 4 Decisions d2 0 3 d3 1 5 Which decision do you choose? -2 -1 -3 Problem Formulation • A decision problem is characterized by decision alternatives‚ states of nature‚ and resulting payoffs. • The decision alternatives are the different possible strategies the decision maker can employ. • The states
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Why is it from the North? (look to graph for answer‚ what does d represent) EXAMPLE 5: A ball is thrown vertically upward from a window that is 3.6 m above the ground. The ball’s initial speed is 2.8 m/s and the acceleration due to gravity is 9.8 m/s2. (a) What is the ball’s speed when it hits the ground? (b) How long after the first ball is thrown should a second ball be simply dropped from the same window so that both balls hit the ground at the same time? NOTE: Let down be the "negative"
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chart above. The chart shows distance and time measurements for a racing A. 0 m/s B. 96 m/s C. 192 m/s D. 384 m/s 2. What is the racing car’s acceleration? A. 0 m/s2 B. 96 m/s2 C. 192 m/s2 D. 384 m/s2 3. Theodore plots the data in the chart above. He plots distance on the y-axis and time on the x-axis. How will the movement of the racing car be represented on the graph? A. a curved line
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NO3-(aq)+Na+(aq) • Mn(NO3)2 (aq)+NaOH(aq) →Mn(OH)2(s)+ NO3-(aq) +Na+(aq) • Pb(NO3)2 (aq)+H2S(aq)↔PbS2(s)+ S2-2(g)+NO3-(aq) • Ag(NO3) (aq)+H2S(aq)↔ AgS2(s)+ S2-2(g)+NO3-(aq) • Ba(NO3) (aq)+H2S(aq)↔No reaction existed • Fe(NO3)2(aq)+H2S(aq)↔ Fe2S3(s)+ S2-2(g)+NO3-(aq) • Cu(NO3)2(aq)+H2S(aq)↔ CuS(s)+ S2-2(g)+NO3-(aq) • Ni(NO3)2(aq)+H2S(aq)↔NiS(s)+ S2-2(g)+NO3-(aq) • Mn(NO3)2(aq)+H2S(aq)↔MnS(s)+ S2-2(g)+NO3-(g) • Fe(OH)3(s)+HNO3(aq)↔Fe+3(aq)+ NO3-(g)+ H2O(l) • Cu(OH)2(s)+HNO3(aq)↔Cu2+(aq)+ NO3-(g)+ H2O(l)
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Objective The purpose of this experiment is to identify an unknown proprietary drug using thin-layer chromatography. The unknown’s behavior in thin-layer chromatography will be compared with that of its possible component analgesics. The possible unknowns and their analgesic ingredients will be Anacin (aspirin‚ caffeine)‚ Excedrin (acetaminophen‚ caffeine‚ aspirin)‚ Motrin (ibuprofen)‚ and Tylenol (acetaminophen). Introduction Thin-layer Chromatography(TLC) was the method used to figure out and
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