OC userin Mathematics·16 Dec 20173. Find the equation of the line tangent to the curve 2x²y + y2 - 6x - 9 = 0 at the point (1,3).
OC userin Physics·16 Dec 201739. Use the Henderson-Hasselbalch equation to calculate the pH of each solution. a. a solution that is 0.135 M in HClO and 0.155 M in KCIO b. a solution that contains 1.05% C2H5NH2 by mass and 1.10% C2H5NH3Br by mass c. a solution that contains 10.0 g of HC2H2O2 and 10.0 g of NaC,H,O, in 150.0 mL of solution
OC userin Psychology·15 Dec 201742. According to Trivers' (1972) "Parental Investment theory" an equal (or approximately equal) investment by both parents would predict A) a polyandry mating system B) a polygynandry mating system C) a polygyny mating system D) a monogamous mating system E) none of the above
OC userin Chemistry·16 Dec 201738. List these types of electromagnetic radiation in order of (i) increasing frequency and (ii) decreasing energy per photon. a. gamma rays b. radio waves c. microwaves d. visible light
OC userin Statistics·15 Dec 20177. Suppose that 4 and -2 are the only eigenvalues of the matrix A. Which of the following statements is true? (a) 41-A is invertible, and there is a nontrivial solution to Av = -2v. (b) det (41+ A) = det(21 - A) = 0. (c) 41 - A is not invertible, and there is a nontrivial solution to Av = -2v. (d) det(41+ A) = 0, and there is a nontrivial solution to (21 - A)v = 0. (e) none of the above
OC userin Economics·17 Dec 201724) The opportunity cost to a firm of using an asset is zero if A) the asset is already owned by the firm. B) no money was spent to acquire the asset. C) the asset has no alternative uses. D) the asset has zero sunk costs associated with it. E) the asset was given to the firm for free.
OC userin Economics·16 Dec 201715. Inter-sectoral adjustment refers A. adjustment across sectors according to the relative mix of inputs used in production, and is primarily associated with the exploitation of economies of scale. B. adjustment within sectors according to the relative mix of inputs used in production, and is primarily associated with specialization according to comparative advantage. C. adjustment within sectors and is primarily associated with economies of scale. D. adjustment across sectors according to the relative mix of inputs used in production, and is primarily associated with specialization according to comparative advantage
OC userin Psychology·17 Dec 20178. Suppose a researcher gave people the following problem: In a group of 100 people, 70 are pilots and 30 are bookkeepers. Of that group, one man is meek, timid, and enjoys helping people. Is he more likely to be a pilot or a bookkeeper? Most subjects would answer A) bookkeeper, demonstrating a bias toward representativeness B) bookkeeper, demonstrating a prior probability bias C) pilot, demonstrating use of the base-rate information given D) pilot, demonstrating the availability bias E) bookkeeper, demonstrating functional fixedness
OC userin Economics·17 Dec 201719. If the government earns $100 of revenue from the tariff, what must be the amount of the tariff? (a) $2 per unit. (b) $1 per unit. (c) $0.77 per unit. (d) $0.33 per unit.
OC userin Computer Science·17 Dec 201711. How many times does the letter K get printed in the following code? for (int i = 0; i < 5; i++) System.out.println("K"); for (int j = 0; j
OC userin Physics·15 Dec 201738. Use the Henderson-Hasselbalch equation to calculate the pH of each solution in Problem 30.
OC userin Economics·16 Dec 201715. In the local market for coffee, what would happen if Joyce's Java and Everyday Joe's coffee shops go out of business? A) The supply curve shifts to the right. B) The demand curve shifts to the left. C) The supply curve shifts to the left. D) The demand curve shifts to the right.
OC userin Physics·17 Dec 20175.21 .. CP BIO Force During a Jump. When jumping straight up from a crouched position, an average person can reach a max- imum height of about 60 cm. During the jump, the person's body from the knees up typically rises a distance of around 50 cm. To keep the calculations simple and yet get a reasonable result, assume that the entire body rises this much during the jump. (a) With what initial speed does the person leave the ground to reach a height of 60 cm? (b) Draw a free-body diagram of the per- son during the jump. (c) In terms of this jumper's weight w, what force does the ground exert on him or her during the jump?
OC userin Economics·14 Dec 20175) Suppose an individual wheat farmer's income is influenced by the region's average daily temperature. When examining the determinants of individual farmer income, the average daily temperature is a(n) __ variable. A) endogenous B) exogenous C) flow D) dependent E) induced