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Lily has a mask collection. She keeps some in a display case and the rest on the wall. 365 of her masks are on the wall, and 27% of her masks are in the display case. What is the total number of masks in Lily's collection?

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an air filled rectangular waveguide operates at a frequency of 140 GHz a = 2mm b = 1mm

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Find the limit. Use l'Hospital's Rule where appropriate. If there is a more elementary method, consider using it. lim x → 0 5 sinh(x) − 5xx3

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A magnetic field B, directed along the z-axis, varies with time T as shown in the figure. A planar conducting loop is in the magnetic field. The magnetic field is perpendicular to the plane of the loop. B 0 Select the appropriate description for the magnitude of the EMF induced in the loop (EMF-mag) and for its direction (EMF-dir) at the indicated times. Select a response for each statement. The EMF-mag at J is equal to zero. The EMF-mag at G is... that at L. The EMF-mag at D is... that at L. The EMF-mag at A is... that at H. The EMF-mag at A is... that at D. The EMF-dir at H is the same as at F. The EMF-dir at H is opposite to that at A. The induced EMF in a loop is related to the rate of change of the magnetic flux through the loop, and its direction is given by Lenz's Law. Submit Answer Incorrect. Tries 5/99 Previous Tries

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Alpha=10% the confidence interval for mu is found to be (110, 321). Which of the following statement(s) is true? (a) We are 5% sure that the actual mean is between 110 to 321. (b) We are 20% sure that the actual mean is outside the range of 110 to 321. (c) We are 90% sure that the actual mean is between 110 to 321. (d) We are 80% sure that the actual mean is between 110 to 321. (e) We are 10% sure that the actual mean is between 110 to 321. (a) and (c) both (b) and (d) (a) (c)

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Explain the balance sheet view of money supply and high powered money.

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What did the Battle of Omdurman clearly demonstrate? Europeans were morally superior to Africans. Japan had become a major world power. European troops with modern weapons could subdue a vast native army. China still had the power to defeat Western powers even as late as 1794. Britain had fallen behind Germany by the end of the nineteenth century.

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2.2 Xolani, a learner in Grade 10, gives the answer: $10^2$ = 10 × 2 = 100 to the question below: Showing all steps, calculate the value of $10^2$ 2.2.1 Explain the conceptual error made by Xolani. (3) 2.2.2 What mental construct (or idea) must be modified by Xolani to overcome this misconception? (2) 2.2.3 Describe a practical, constructive activity that Xolani could engage in to remedy the misconception. (10) 2.2.4 What kind of process occurs due to the modification of Xolani's mental construct: accommodation or assimilation? Explain your answer. (5) [40]

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Efficiency of sorting algorithms You are to create a program that enables you to measure the execution times of various sorting algorithms to better understand their efficiency characteristics. For each sorting algorithm, you are to measure and record the execution times for various lists of randomly generated integers. The list sizes used for the test cases should start at 10,000, and go up by 10,000 for each test until the execution time for the test exceeds 60 seconds. The algorithms for which you are to run the tests are: • Selection sort • Bubble sort • Merge sort • Tree sort You are to report the execution times obtained for the algorithms in a table with the following format: Execution times in seconds (use 2 decimal digits) List size Selection Sort Bubble sort Merge sort Tree sort 10,000 20,000 30,000

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Question 23 A ray of light, P moving in air strikes a glass slab as shown below. N P $\theta_1$ $\theta_2$ 45° Q Air Refractive index = $n_1$ = 1 Glass Slab Refractive index = $n_2$ $\theta_3$ R If the measure of angle $\theta_3$ = 26.2° then the value of $n_2$ is... Select one: a. 1.7 b. 1.5 c. 1.6

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