13 Figure 35-30 shows three situations in which two rays of sun-light penetrate slightly into and then scatter out of lunar soil.Assume that the rays are initially in phase. In which situation arethe associated waves most likely to end up in phase? (Just as theMoon becomes full, its brightness suddenly peaks, becoming 25%greater than its brightness on the nights before and after, becauseat full Moon we intercept light waves that are scattered by lunarsoil back toward the Sun and undergo constructive interference atour eyes. Before astronauts first landed on the Moon, NASA wasconcerned that backscatter of sunlight from the soil might blindthe lunar astronauts if they did not have proper viewing shields ontheir helmets.)(a)(b)(c)

Assume that the two rays are in phase initially. As we can see from the figure that only in…

Answered: 13 Figure 35-30 shows three situations…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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22
8. Two black square plates of size (4 x 4 m) are placed parallel to each other at a particular distance to have a shape factor of 0.55. The plates are maintained at a temperature of 1500 °C and 750 °C respectively. Determine the radiation heat exchange between the two plates.
Identify the direction of wave-propagation by calculating Poynting Vector for following waves: i. E = te-jßz; Ĥ = îne-jßz ii. Ē = telBz, Ĥ = -ŷnelßz iii. Ē = î sin ß,z; Ħ = -ŷ z cos B,z %3D jwu
Which statement below is false? O The wavelength of light is the distance between two corresponding points in the wave pattern O The frequency of the light is the number of waves that pass a given point in a second The higher the frequency of light, the longer the wavelength The frequency of light increases as wavelength decreases The higher the frequency of light, the greater its energy
8. Three polarizing disks whose planes are parallel and centered on common axıs. The directions of their transmission axes relative to the vertical are respectively: 0 = 17°, 6, = 42°, and 0, 75°. A beam of light polarized along the vertical is incident onto the first polarizer with an intensity of 1o = 20 W/m2, Calculate the transmitted intensity through all three polarizers. W/m2
If I have a light with a frequency of 5 x 10^14 what is the wave length in nm?
Two light sources of identical strength are placed 10m apart. An object is to be placed at a point P on a line l, parallel to the line joining the light sources and at a distance d meters from it (see the figure). We want to locate P on, so that the intensity of illumination is minimized. We need to use the fact that the intensity of illumination for a single source is directly proportional to the strength of the source and inversely proportional to the square of the distance from the source. a) Find an expression for the intensity l(x) at the point P. b) If d = 5m, use graphs of l(x) and l'(x) to show that the intensity is minimized when x = 5m, that is, when P is at the midpoint of l. c) If d = 10m, show that the intensity (perhaps surprisingly) is not minimized at the midpoint. d) Somewhere between d = 5m and d = 10m there is a transitional value of d at which the point of minimal illumination abruptly changes. Estimate this value of d by graphical methods. Then find the exact value…
8. Three polarizing disks whose planes are parallel and centered on common axis. The directions of their transmission axes relative to the vertical are respectively: 01 = 17°, 02 = 45°, and 03 = 55°. A beam of light polarized along the vertical is incident onto the first polarizer with an intensity of Io = 14 W/m2. Calculate the transmitted intensity through all three polarizers. W/m2 of19 00 of1 9 oor19
1-
3. Calculate the polarization loss factor (PLF)...in db and dimensionless of an antenna whose electric field polarization is expressed as: E = (ax+ ay)E(r,0,0), when the electric field of the incident wave given by E, = ax E, (x, y)e-k=
On a sunny summer day, with the sun overhead, you can stand under a tree and look on the ground at the pattern of light that has passed throughgaps between the leaves. You may see illuminated circles of varying brightness. Why are there circles, when the gaps between the leaves have irregular shapes?

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