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Which parent nucleus can undergo gamma decay to produce Co-60? Group of answer choices Cu-64 Ni-60 Fe-60 Co-60

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potassium hydroxide KOH (base). The dissociation of KOH is shown below. If the Kb of the KOH base was $9.5 \times 10^{-3}$, calculate the equilibrium concentration of $[KOH]$, $[H_3O^+]$, $pOH$, $[OH^-]$ and $K_a$ of the liquid. Use ICE Table & The Approximation Rule if Possible $KOH(aq) + H_2O(l) \rightarrow OH^-(aq) + K^+(aq)$

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Find the dimension of the matrix $ \left[\begin{array}{ccccc}5 & -2 & 5 & 1 & 2 \\ 1 & 4 & 0 & 3 & -3\end{array}\right] $ \[ x \]

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What is the output of this Java program? class Driver { public static void main(String[] args) { int a = 94; int b = 0; for (int c = 3; c <= 6; c++) { b = 0; while (b < c) { b = b + 1; a = a - b; } b = b + a; } System.out.print(b); } }

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11.5 Question 4, 11.5.26 Part 1 of 2 HW Score: 50%, 3 Points: 0 of 1 Find the absolute maximum and minimum values of the function over the indicated interval, and indicate the x-values at which they occur. f(x) = x^2 - 6x - 4; [-1, 4] The absolute maximum value is at x = (Use a comma to separate answers as needed.) 6 4x Find the absolute maximum value on (0, ?) for f(x) = e^x Select the correct choice below and, if necessary, fill in the answer boxes to complete your choice. A. The absolute maximum is at x = (Round to two decimal places as needed.) B. There is no absolute maximum. Find the absolute minimum value on [0, ?) for f(x) = (x + 6)(x - 3)^2. Select the correct choice below and, if necessary, fill in the answer boxes to complete your choice. A. The absolute minimum is at x = B. There is no absolute minimum.

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1. Which of the following statements are true of erythrocytes? (Read carefully and select all the correct statements.) (3 marks) a) The protein hemoglobin contains the mineral iron. b) The mineral iron enables erythrocytes to carry oxygen. c) Erythrocytes pick up oxygen in pulmonary capillaries. d) The shape of an erythrocyte is best described as a deflated soccer ball. e) Hemoglobin that has given up its oxygen is called debonded hemoglobin. f) The life span of an erythrocyte is about 60 days. 2. Which of the following statements are true of the life cycle of erythrocytes? (Read carefully and select all the correct statements.) (2 marks) a) All erythrocytes are produced in the red bone marrow and the liver. b) Vitamin B12 and folic acid are necessary for DNA synthesis in mature erythrocytes. c) Iron and protein in the diet are necessary to become part of hemoglobin. d) The intrinsic factor, produced by the liver, prevents digestion of vitamin B12. e) The only part of old erythrocytes that can be recycled is the iron. f) Old erythrocytes are phagocytized by lymphocytes in the liver, spleen, and red bone marrow. g) Bilirubin is a waste product of the heme of old hemoglobin. h) Bilirubin is normally eliminated by the kidneys. 3. Which of the following statements are true of chemical blood clotting? (Read carefully and select all the correct statements.) (4 marks) a) Many of the clotting factors are produced by the liver, but some are produced by the spleen. b) Fibrinogen is changed to fibrin in stage 1 of clotting. c) Calcium ions are needed for all three stages of clotting. d) Prothrombin activator changes thrombin to prothrombin. e) The actual clot is made of fibrin. f) The purpose of clot retraction is to create a smaller area to be repaired. g) The purpose of fibrinolysis is to strengthen a newly formed clot. h) The endothelium of blood vessels is smooth and helps prevent abnormal clotting.

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17-31. Materials Mix and Yield Variances John's Weed-B-Gone yard service sprays lawns to rid them of weeds. John mixes the two chemicals, Weed-X and Pest-O, in proportions depending on the climate and the particular weed problems of the season. A standard mix calls for a gallon of the mixture to combine equal parts of Weed-X and Pest-O. Weed-X has a standard cost of $10 per gallon and Pesto-O has a standard cost of $25 per gallon. Each gallon can treat 100 square yards of lawn. John expects to treat 540,000 square yards of lawn. For the past season, John treated 648,000 square yards. He used 3,600 gallons of Weed-X and 3,000 gallons of Pest-O. He paid a total of $35,280 for the Weed-X and $72,000 for the Pest-O. Required a. Compute the materials price and efficiency variances for the season. b. Compute the materials mix and yield variances for the season.

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The switch moves instantaneously to position b. Analyze the circuit to find the following: i. Initial value of Va (2) ii. Initial value of Va/Ot (4) iii. Vatfort0 (4) 2k 3k 4k + 0.2 F va(t) 500mH Fig. 1(b)

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2.34 The following table lists recoverable reserves of 60 wells on a prospect: 12.65 115.00 171.35 63.25 55.20 138.00 57.50 185.15 58.65 94.30 47.15 127.65 94.30 50.60 139.15 173.65 85.10 220.80 159.85 230.00 23.00 36.80 14.95 88.55 135.70 174.80 180.55 44.85 109.25 55.20 29.90 133.40 126.50 46.00 127.65 126.50 331.20 280.34 95.45 161.04 109.35 241.65 112.72 70.15 48.34 247.25 58.67 98.96 79.43 19.55 27.62 25.31 146.12 65.57 33.37 36.83 36.82 265.65 72.47 96.48 a. Using the equation 1 + 3.322logN, classify the data in equal class intervals. b. What is the frequency of reserves in each interval? c. Generate the cumulative frequency distribution d. Generate the cumulative relative frequency and the decumulative relative frequency distribution. e. Plot the frequency distribution as a histogram and the cumulative relative frequency as an ogive. f. Using the information obtained above; what is the (a) probability of reserves greater than 48,000 Stb, (b) probability of reserves less than 100,000 Stb, and (c) probability of reserves between 160,000 Stb and 43,000 Stb. 2.35 Using the ungrouped data of Problem 2.34, calculate the following. a. Mean, mode, and median. b. Standard deviation, variance, and coefficient of variation. c. Geometric, harmonic, and quadratic mean 2.36 Group the data of Problem 2.34 and calculate the following from the grouped data a. Mean, median, and mode b. Standard deviation, variance, and coefficient of variation c. Geometric and harmonic mean d. Draw histogram and cumulative relative frequency curve for the grouped data

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A 500-hp 600-volt compound motor operates at a speed of 495 rpm at full load. If the flux per pole is 8.9 x 10^6 maxwells and the armature resistance is 0.015 ohm, calculate the following (Assume a value of k=1.28 x 10^-7 and a brush drop of 5 volts). If the load on the motor is increased so that the armature current rises to 789 amps, at what speed will the motor operate, assuming that the flux increases 8 percent? When the load is removed, the speed rises to 600 rpm. What is the regulation of the motor?

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nicol-s b.