5. Consider a cellular tower with P-10W, Gt-10 dBi, Gr-3 dBi, and L-0 dB, Mountain may be modeled as conducting knife edge 400 m 5 m 60 m Terrain 2 km 3 km At 4000 MHz compute the diffraction loss for the problem shown above. a

3. A Cu target emits an X-ray line of wavelength = 1.54 Å. a) Given that the Bragg angle for reflection from the (111) planes in Al is 19.2°, compute the interplanar distance for these planes. Recall that aluminum has an fcc structure. b) Knowing that the density and atomic weight of Al are, respectively, 2.7 g/cm3 and 27.0, compute the value of Avogadro's number.

7. The Numerical Aperture, NA, of a waveguide is defined as no sin A where nд is the refractive index of the material from which the light enters the waveguide and is the maximum acceptance angle, as shown in Q3. Apply trigonometry to the figure in Q3 and show that the Numerical Aperture is: √√n²-n² NA =

A light with wavelength λ = 565 nm falls on a pair of closely separated slits. The first dark fringe of the interference pattern is at an angle θ = 3.25 degrees from the central maximum. a) Solve for the numerical value of d in mm.

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38. Measurements are made of the intensity distribution within the central bright fringe in a Young's interference pattern (see Fig. 36.5). At a particular value of y, it is found that I/ - 0.810 when 600-nm light is used. What wavelength of light should be used to reduce the relative intensity at the same location to 64.0% of the maximum intensity?

II. Problem Solving. Show your step-by-step solutions. A transverse wave is propagating in a medium until it encounters another medium at an angle of incidence cqual to 30°. As a result, it refracts at an angle of 50° from the horizontal. What is its initial speed if its refracted wavclength and frequency are 0.02 meters and 5 Hz respectively?

Problem 25: Suppose light falls on double slits separated by 185 µm. Randomized Variables d=185 μm 0 = 0.65° What is the wavelength of the light in nm, if the third-order maximum is at an angle of 0.65° ? 2=1