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christina cohen

christina c.

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Question 4 The larger the down payment, the less the house costs. A) True B) False

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1) Draw vector of velocity, gravitational force and gravitational acceleration 2) Calculate the speed 3) Period 4) Gravitational potential energy

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According to the U.S. Buy American Act, federal government agencies cannot purchase materials and products from U.S. suppliers if their prices are higher than those of foreign competitors. True False

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Question 7: At time $t$, the position of a body is $s = \frac{t^4}{4} - t^3 + t^2$, $0 \le t \le 3$. a. Find the body's velocity. (2 marks) b. Find the total distance travelled by the body from $t = 0$ to $t = 3$. (2 marks)

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HW22: Problem 11 Previous Problem Problem List Next Problem (1 point) Consider the power series $\sum_{n=1}^{\infty} \frac{3^n x^n}{n!}$ Find the radius of convergence R. If it is infinite, type \"infinity\" or \"inf\". Answer: R = What is the interval of convergence? Answer (in interval notation):

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The core insight of the multiplier is that: A. households would rather spend than save. B. businesses prefer to be in the expansion phase of the business cycle. C. an increase in spending will increase equilibrium income by more than the initial increase in spending. D. an increase in equilibrium income will increase the marginal propensity to consume.

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A new treatment conventional plant will use ozone as the primary disinfectant and chloramine (NaOCl+NH3) as the secondary disinfectant. Design the disinfection system given: Water analysis: Constituent Concentration TOC 10-20mg/L Bromide 0.010mg/L Turbidity 10-500NTU Total coliforms 100-1,000/100mL Giardia cysts 5/100L Virus 2/100L Cryptosporidium oocysts >3.0/L pH of the water entering the contact chamber=7.0 Winter water temperature will be 5°C Ozone trial dose=2.5mg/L Second-order rate constant of 6.0x10L/mg-min Superior performance contact chamber Sodium hypochlorite and ammonia (g/min will be used to achieve a dichloramine=1.6mg/L a. What log inactivations are required? Make a table of microorganism, reference (cite the tables that you use for each microorganism), total log inactivation required, treatment credits, and disinfection log inactivations for Giardia, viruses, and Cryptosporidium. b. What are the Ct requirements for Giardia, viruses, and crypto during disinfection Cite the tables that you use. Which Ct requirement governs? c. What is the time required for 90% of the flow to be exposed to the disinfectant d. What is the hydraulic residence time? e. Calculate the decay through each cell of the ozone contact chamber and confirm that sufficient Ct is provided in cells 2 though 10 combined, or recommend a different dose and/or time. Provide your Excel calculations. f. Propose dimensions (L x W x H) for the ozone contact chamber. Explain your reasoning. g. What is the dichloramine concentration in mol/L? h. What is the sodium hypochlorite (NaOCl) feed rate to achieve 1.6 mg/L NHCl? i. What is the ammonia (NH3) feed rate to achieve 1.6 mg/L NHCl?

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Show your work for full credit. 1. Suppose when the price of cologne is $170, the average number of bottles sold weekly is 50. When there is a sale and the cologne is $130, the average number of bottles sold weekly is 100. a. The elasticity of demand = b. This product can be described as having a demand.

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The function $h: \mathbb{Z}_{12} \rightarrow \mathbb{Z}_{18}$ is defined by the formula $h([a]) = [3a - 5]$. (a) Verify that the function $h$ is well-defined, that is, show that if $a, b \in \mathbb{Z}$ are such that $[a] = [b]$ in $\mathbb{Z}_{12}$ then $[3a - 5] = [3b - 5]$ in $\mathbb{Z}_{18}$.

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The current asset section of food truck Wok n' Roll's balance sheet included cash of $30,000 and accounts receivable of $45,000. The only other current asset is inventories. The company's current ratio is 2.5 and its acid-test ratio is 2.0. Determine the ending balance in inventories and total current liabilities.

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