Numerade

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"LED light bulbs are more energy efficient, last longer, cost more, and have a smaller environmental impact from manufacture to recycling or disposal. The question is which costs less: incandescent, compact fluorescent (CFL), or LED lights? Incandescent CFL LED Cost/bulb $0.42 $1.90 $7.95 Life of bulb (hours) 1,250 8,333 25,000 Watts used per hour 60 14 7 Ignore the time value of money. What is the total cost per option for 25,000 hours of lighting in a community with $0.15/kWh electricity for each choice?" Incandescent: $225. CFL: $52.50. LED: $26.25. Incandescent: $225.42. CFL: $54.40. LED: $34.20. "Incandescent: $225,008.40. CFL: $52,505.70. LED: $26,257.95." Incandescent: $233.40. CFL: $58.20. LED: $34.20.

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Charges Q1 = -4.2 C and Q2 = 3.9 C are at adjacent corners of a square of side 0.4 m. There is no charge at point A, which is the midpoint along its side. The potential is chosen so that V approaches 0 very far from the charges. The electric potential energy in this system is ______ x 1011 J.

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10. How can we use fluorescent tags to observe organisms? 11. Serology relies on the specific interaction between antibodies and 12. What do we call the clumping reactions occurred in serology? True or False 13. A test that uses antigens or antibodies labeled with radioactive probes is known as: 14. in vivo testing is performed where? 15. The pattern formed when RBCs mix with T-cells is called a

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After walking a short distance, a mid-aged male developed substernal pain. He also reported discomfort in his left shoulder and jaw, which lasted 2 minutes then subsided with rest. He reported that this has occurred frequently over the past few months with similar exertion. You suspect he is experiencing which condition? O Myocardial infarction Prinzmetal angina Unstable angina Stable angina

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Given the function $f(x) = \frac{x^2 - 16}{x - 4}$, $x \in [-2, 2]$ answer the following questions.

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A random mutation occurs and the GGA codon is changed to GCU. What effect does this substitution have on the amino acid being called for?

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Compute the following matrix products, if possible. If the product is not possible, state why? (a) [[1,5],[2,3],[4,7]][[1,0,1],[0,1,1],[1,1,0]] (b) [[1,4,6],[7,2,5],[9,8,3]][[1,0,1],[0,1,1],[1,1,0]] (c) [[1,0,1],[0,1,1],[1,1,0]][[1,4,6],[7,2,5],[9,8,3]] (d) [[1,3,2,1],[4,1,-4,-1]][[0,2],[-1,1],[2,2],[4,2]] (e) [[0,2],[-1,1],[2,2],[4,2]][[1,3,2,1],[4,1,-4,-1]]

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! Required information [The following information applies to the questions displayed below.] Orion Motors manufactures cars. 1. Inspecting raw materials $ 70,000 2. Training lean business practices 69,000 3. Product recalls 15,000 4. Warranty claims 35,000 5. Equipment maintenance 51,000 6. Scrap of defective materials 10,000 Classify each of the following quality costs as either prevention, appraisal, internal failure, or external failure. 1. Inspecting raw materials Appraisal 2. Training lean business practices Prevention 3. Product recalls External failure 4. Warranty claims External failure 5. Equipment maintenance Prevention 6. Scrapping defective materials Internal failure 0

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Text: Use the ALEKS calculator to find 55% of 35. Do not round your answer.

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An adiabatic and reversible turbine operates with air as the working fluid. The steam enters at a pressure of 500 kPa with a volumetric flow rate of 5 $m^3/s$ and exits at a pressure of 100 kPa and a specific volume of 0.5 $m^3/kg$. Answer the following questions about this turbine: 1) Identify the T-S diagram for this process 2) What is the mass flow rate of the air? a. 33.03 kg/s b. 31.57 kg/s c. 21.11 kg/s d. 25.66 kg/s 3) How much energy does the turbine produce? a. 1209.85 kW b. 1653.41 kW c. 3226.99 kW d. 3571.71 kW An identical turbine with the same inlet conditions and outlet pressure operates with an isentropic efficiency of 60%. For this turbine 4) How much energy does the new turbine produce? a. 1936.19 kW b. 1028.37 kW c. 1706.13 kW d. 1138.83 kW 5) What is the new outlet temperature? a. 214.90 K b. 152.81 K c. 163.83 K d. 178.31 K 6) What is $\Delta s$ for the new turbine? a. -1.13 kW/K b. -6.65 kW/K c. 1.13 kW/K d. 6.65 kW/K

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concepci-n s.