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May 2022
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Questions from May 22, 2022
Curaid Company wishes to forecast monthlysales for the upcoming year of its line of designer bandages, introduced twoyears ago and advertised using the slogan“What the best-dressed cuts are...
May 23, 2022
Consider the data in problem 3. a. Use Holt’s Technique with a = .2 and y —.3 to perform a forecast for the next 1 2 months.b. Repeat part a using a = .5 and y = .7. c. Which set of...
May 23, 2022
Daily donut sales (in dollars) at Watson’sDonuts for the past four weeks are as follows:Assume that Watson’s wishes to forecastdaily sales for weeks 5 and 6 and wants to use a...
May 23, 2022
Weekly sales (in hundreds) of Pert shampooat the SaveMor drug chain for the past 16 weeks are as follows:Management wishes to forecast the annualdemand for Pert shampoo in order to...
May 23, 2022
. Dixon Glass manufactures mason jars foruse in home canning. Quarterly sales for this division (in millions of dollars)over the past five years are as follows (year 5 is the most recent...
May 23, 2022
The Hillel Sandwich Shop is trying toestimate its profit for the upcoming month. In order to do this, it mustforecast future sandwich sales. Below are the number of sandwiches sold eachday of...
May 23, 2022
Consider the data in problem 9. a. If the firm wishes to use exponentialsmoothing to forecast the number of sandwiches sold daily, use Solver todetermine the smoothing constant that minimizes...
May 23, 2022
CHOOSE ONE WRONG ANSWER 1. The femoral arterya. Is the continuation of the external iliac arteryb. Enters the thigh deep to the inguinal ligamentc. Lies within the femoral sheathd. The tendon of psoas...
May 23, 2022
Refer to the vector defined in the previous problem, and let (see Chapter 7, Eq. (7.24)): Eq. (7.24) Discuss the shape and the orientation of the polarization ellipse as a function of ω, over the...
May 23, 2022
Calculate the Stokes parameters, vs. ω, for the vectorof the previous problem, assuming that the constant A is real. Study thecorresponding curve on the Poincar´e sphere.Write in component...
May 23, 2022
Write the Jones matrix for a half-wave retardation plate,i.e., an element which introduces a phase delay of π radians between itsprincipal axes. First, write the matrix in a reference system which...
May 23, 2022
Write the Jones matrix for the following combinations ofcascaded elements. a) A quarter-wave plate followed by an ideal polarizer (withan arbitrary rotation between the axes of the two...
May 23, 2022
Suppose that the device studied in the previous problem can, in practice, be considered as a quarter-wave plate when the phase shift between J11 and J22 deviates by less than 1% from its nominal value...
May 23, 2022
Show that the results of part a) of the previous problemremain the same when jβ is replaced by γ, with real γ, in theargument of the exponentials and as a factor in the expression of Hx.On the...
May 23, 2022
The field of Problem 3-1 is incident on a source whichconsists of the following surface electric current density, imposed on the z =0 plane:a) Calculate the reaction of the field on this...
May 23, 2022
In the definition of reaction, replace the imposed currentdensities with their complex conjugates. Retain all the other assumptions ofthe reciprocity theorem. Prove that a “modified” reciprocity...
May 23, 2022
Consider the field of Problem 3-1, defined for−∞ a) Calculate its equivalent electric and magnetic currentson the plane z = 0, i.e., the current densities on that plane such that thefield...
May 23, 2022
A rectangular waveguide is defined as an infinitely longregion of rectangular cross-section, filled by a homogeneous losslessdielectric and surrounded by a perfectly conducting wall (see Figure...
May 23, 2022
a) The wave is uniform, travels in the x3direction, and the electric field is linearly polarized along the x1axis. b) The wave is uniform, travels in the x3direction, and the electric field...
May 23, 2022
Show that the following expressions for power reflectivity(i.e., ratio of reflected and incident power densities), for plane waves at theseparation between two semi-infinite media, are equivalent...
May 23, 2022
A layer of a lossless medium, 1 m in thickness, with arefractive index n = 4, is placed between an air-filled half-space and anideally conducting plane (located at x1 = 0). A uniform plane...
May 23, 2022
A uniform plane wave, impinging at normal incidence on theplane (x1 = 0) of separation between two lossless dielectric media,conveys a power density of 1 mW/mm2. The power density of...
May 23, 2022
A TE-polarized uniform plane wave impinges with an incidenceangle of π/4 radians on the plane x1 = 0, separating air from alossless dielectric medium. The reflection coefficient equals −0.5....
May 23, 2022
Two semi-infinite lossless dielectric media have refractiveindices equal to 3 and to 1, respectively. At a frequency of 3×1014Hz, experimental observation of an evanescent wave in the second...
May 23, 2022
Show that when a wave is incident at the Brewster angle, Eq.(4.95), then the transmitted wave travels at an angle ϑt =π/2 − ϑi. Hence, show that it is impossible to findtwo media such that the...
May 23, 2022
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