OC userin Physics·19 Dec 20175.63 . In a repair shop a truck engine that has mass 409 kg is held in place by four light cables (Fig. P5.63). Cable A is horizon- tal, cables B and D are vertical, and cable C makes an angle of 37.1" with a vertical wall. If the tension in cable A is 722 N, what are the tensions in cables B and C? Figure P5.63
OC userin Mathematics·20 Dec 20174. A computer randomly prints a three-digit string of numbers. The string consists only of the digits 0, 1, 2, or 3 and satisfies the extra condition that the sum of its digits is 3. As an example, 021 is one such string. e. Use your answers from part d. to find the probability P(G) of selecting a 0 digit from any randomly printed string.
OC userin Economics·19 Dec 20173. Suppose the government has imposed a price ceiling on cellular phones. Which of the following events could transform the price ceiling from one that is binding to one that is not binding? a. Cellular phones become more popular. b. Traditional land line phones become more expensive. C. The components used to produce cellular phones become more expensive. @ A technological advance makes cellular phone production less expensive.
OC userin Chemistry·20 Dec 2017la. The reaction below has a K, of 1.23 x 10° at 800°C. Calculate the equilibrium partial pressures of the gases if 176 atm of CO is placed in a container at 800°C? [4 marks] C(s) + CO2(g) – 2 CO(g) Consider a reaction where hydroxide reacts with (R)-1-cyclohexyl-1-iodoethane. The reaction rate depends on the concentration of both hydroxide and (R)-1-cyclohexyl-1-iodoethane. i) Provide the mechanism. Show the curly arrows, relevant lone pairs and all formal charges for each step, draw the intermediates and the product/s? ii) Is the stereochemistry of the product R, S or R and S? Give reasons. iii) Draw a energy diagram of the reaction of free energy versus reaction progress. iv) If HS was used as the nucleophile would the reaction be faster or slower. Give reasons. [6 marks]
OC userin Accounting·18 Dec 20176. The name for comparing across companies that compete in the same section of an industry at the same point in time is: A. ratio analysis B. cross-sectional analysis C. time-series analysis D. financial analysis
OC userin Economics·18 Dec 2017Use the figure below to answer the following questions. Price (dollars per unit) B HE.................. 50 100 150 200 250 Quantity (units) Figure 3 7) Refer to Figure 3. If the level of output is 200 units, the deadweight loss is area A) DCE B) ACH. C) ACG. D) HCG E) BCF
OC userin Economics·18 Dec 201723) The theory of the firm is based on the following two key assumptions: A) Firms seek to become as large as possible, and they seek to maximize total revenue. B) Each firm has a highly diversified product line, and this necessarily leads to profit maximization. C) Firms seek to maximize profit, and to distribute the maximum value fairly. D) Firms seek to maximize profits, and the firm is a single, consistent decision-making unit. E) Firms seek to maximize revenues, and to maximize undistributed profits.
OC userin Statistics·20 Dec 20179. (8pts) Consider the linear transformation T:R2 R3 defined by (x + 4y -C 3y and the linear transformation U: R3 ©)-(3) •©–0). ()-(6), «()-(-) R2 such that (a) Find the matrices of T and U.
OC userin Economics·19 Dec 20171. When the price of tortilla chips rose by 10 percent, the quantity of tortilla chips sold fell by 4 percent, and the sale of dips (like salsa and bean dip) fell by 8 percent. This set of facts indicates that a. the cross price elasticity between tortilla chips and dips is 0.8, so the two are substitutes. b. the cross price elasticity between tortilla chips and dips is 0.4, so the two are complements. c. the cross price elasticity between tortilla chips and dips is 0.8, so the two are complements. d. the cross price elasticity between tortilla chips and dips is 0.4, so the two are substitutes.
OC userin Calculus·19 Dec 201713. If In (In x) = 1 then x equals (A)O (B)e (C) e? De (E) none of (A) to (D)
OC userin Economics·18 Dec 201719. How much profit or loss do firms in the industry make in this new short-run equilibrium? (A)-$256 (B)-$144 (C)-$72 (D) -$32 (E) $0 (F) +$32 (G) +$72 (H) +$ 144 (1) +$256 (J) none of the above
OC userin Physics·19 Dec 201714.39. A thrill-seeking cat with mass 4.00 kg is attached by a harness to an ideal spring of negligible mass and oscillates vertically in SHM. The amplitude is 0.050 m, and at the highest point of the motion the spring has its natural unstretched length. Calculate the elastic potential energy of the spring (take it to be zero for the unstretched spring), the kinetic energy of the cat, the gravitational potential energy of the system relative to the lowest point of the motion, and the sum of these three energies when the cat is (a) at its highest point; (b) at its lowest point; (c) at its equilibrium position.
OC userin Computer Science·20 Dec 201710. Consider a method with the header: public static int method (String x) Is method ("" + method ("10")) a valid way to call it? Write YES or NO
OC userin Mathematics·17 Dec 20175. Evaluate the following expressions. (e) p(-3), where p(x) = 24 – 3x2 + 8x – 2, using the remainder theorem.