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francisco javier ortiz

francisco javier o.

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A. Solve the following initial value problem: $\cos(t)^2 \frac{dy}{dt} = 1$ with $y(22) = \tan(22)$. (Find y as a function of t.) $y = \tan(t)$ B. On what interval is the solution valid? (Your answer should involve pi.) Answer: It is valid for $\frac{19\pi}{2} < t < \frac{21\pi}{2}$. C. Find the limit of the solution as $t$ approaches the left end of the interval. (Your answer should be a number or "PINF" or "MINF". "PINF" stands for plus infinity and "MINF" stands for minus infinity.) Answer: MINF D. Similar to C, but for the right end. Answer: PINF

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A compound is found to contain 52.13 % carbon , 13.15 % hydrogen , and 34.72 % oxygen by mass. The molar mass for this compound is 46.08 g/mol. The molecular formula for this compound is

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5. Two 6-sided dice are rolled and their sum is observed. What is the probability of getting a sum that is divisible by 3 or a sum that is divisible by 2? [2T]

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A driver in a 2,204.5lb car is traveling due East at 13.0m/s toward an intersection. Another driver in a 1400kg car is traveling 22.0° East of North toward the same intersection. The driver heading due East runs their stop sign causing the other car collide with them. The cars stick together upon colliding and leave skid marks at an angle of 48.0° North of East. The police arrive and give a ticket to the driver who ram the stop sign, but the driver who ran the stop sign claims the other driver was speeding. Given the speed limit along both roads is 35m.p.h., a) determine if the driver of the 1400kg car was speeding. Given the overall coefficient of kinetic friction between the tires of the vehicles a road is 0.600, b) determine the distance the two-car system traveled in coming to a stop immediately after the collision.

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hich include land plants and red and green algae, are thought to have descended from a heterotrophic protist that engulfed a(n) ___

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What will you do to try to incorporate self-care into your life? Reference information on the seven pillars of self-care like knowledge & health literacy, mental well-being, physical activity, healthy eating, risk avoidance or mitigation, good hygiene, and rational and responsible use of self-care products & services

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3) Assume you start with 2.00 kg of ice at -22.0 degC. How much heat is required to vaporize all of the sample? Latent heat of fusion, vaporization = 334 kJ/kg and 2260 kJ/kg. Specific heat of ice, water, steam = 2110 and 4190 and 2010 J/(kg-K) Break the process down into the following steps: a) First draw a Heat vs. Temp diagram and label the different stages in this process. (2pts) b) Find the heat required to warm the ice to 0 degC? (2pts) c) Find the heat required to melt the ice to water at 0 degC? (2pts) d) Find the heat required to heat the water to 100 degC? (2pts) e) Find the heat required to vaporize the sample? (2pts) f) What is the sum of these heats? (1 pt)

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Problem 9.33 Part A Find the value of Z in the circuit seen in the figure if $V_s = 91 - 51i$ V, $I_s = 31 + 25i$ A, and $V_1 = 134 + 32i$ V. (Figure 1) Express your answer in complex form. Z = ?

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14.18. A freeze that destroys all of the Florida orange crop would result in C. no change in the price for orange juice. 15.-113. An equilibrium in a market results when the market produces a surplus. b. produces an output at which the price consumers are willing to pay exactly equals the price producers are willing to accept. C. produces an output at which the demand curve lies above the supply curve. e. produces an output at which the supply curve lies above the demand curve. 16.-24. Consider GDP calculated as expenditures. GDP would increase if a. imports decreased b. consumption decreased. C. exports decreased d. investment decreased. e. government spending decreased. 17.-26. GDP can be calculated by adding a. wages, rent, interest, and profits. b. consumption, gross investment, depreciation, and net exports depreciation, net factor income from abroad, and indirect business taxes d. gross investment, wages, profits, rent, and indirect business taxes. e. consumption profits, interest rent, and net exports. 18.-104. If price is below equilibrium a. demand is too low for equilibrium b. the income and substitution effects will cause the price to rise. C. quantity demanded exceeds quantity supplied, and a shortage exists d. demand will increase. e. quantity supplied exceeds quantity demanded, and a shortage exists. 19.-102. When a shortage exists in a market. a. the actual price is lower than the equilibrium price b. there is an excess quantity supplied. C. d. suppliers will quit producing until the shortage disappears. e. the actual price is greater than the equilibrium price. 20.-36. Which of the following statements about seasonal unemployment is true? a. It results primarily from downturns in economic activity. b. It is likely to be associated with jobs that are affected by changes in the weather c. It is the type of unemployment associated with discouraged workers. It is likely to be affected by changes in consumer preferences. It is difficult to predict because it involves all kinds of workers.

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1. For the following series-parallel circuit fill in the table below. (Write your answers, correct to 3 significant digits, neatly in the table) Component Resistance (?) Voltage (V) Current (mA) R1 100 R2 220 R3 470 Circuit 4 V 2. Three point-like charges are shown below. Calculate the net force on charge 1. [3 marks] q1 = -85 ?C 3.2 m q2 = +36 ?C 2.9 m q3 = -82 ?C 3. Two point-like charges are shown below. Calculate the net electric field at point P. [3 marks] q1 = +55 ?C 1.9 m 1.3 m q2 = -46 ?C

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