Discuss the application of trigonometry in the sinusoidal function of radio waves. How can having knowledge of trigonometry be useful in this example?
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Discuss the application of trigonometry in the sinusoidal function of radio waves. How can having knowledge of trigonometry be useful in this example?
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- On the night of April 18, 1775, a signal was to be sent from the steeple of Old North Church in Boston to Paul Revere, who was 1.90 miles away : "One if by land, two if by sea." At what minimum separation did the sexton have to set the lanterns for Revere to receive the correct message about the approaching British? Assume that the patriot's pupils had a diameter of 4.00 mm at night and that the lantern light had a predominant wavelength of 600 nm. mConsider a monochromatic standing wave in a source-free region where: A) determine the value of the magnetic field at all points in spaceB) determine the energy densityThe energy flow to the earth from sunlight is about 1.4 kW/m2.(a) Find the maximum values of the electric and magnetic fields for a sinusoidalwave of this intensity. (b) The distance from the earth to the sunis about 1.5 * 10^11 m. Find the total power radiated by the sun.
- A wave traveling in the +y-direction in a medium where μr = 1, σ = 6.17 X 107 S/m, and with ω = 10X106. The maximum amplitude of the E-wave is 50 mV. Write the instantaneous equations for the electric field (polarized in the x-direction) and magnetic field intensities. Complete solution pleaseYou have decided to increase the detection range of your iphone14 with a highgain, directional parabolic dish antenna to be able to access more distant cell towers (somewhat more difficult to get into your pocket or purse, however). A 3m-diameter parabolic dish is readily available commercially, and the desired sinusoidal radio signal specification is for Emax = 0.10 µV/m. Assume the antenna absorbs all the radiation that is captured by the dish (100% efficiency): (a) What is the amplitude of the magnetic field in this signal? (b) What is the intensity, I, of the radiation received by the antenna? (c) What is the power received by the antenna?Θ G อ @ @ In which case is enf induce? @ A. (a) only B. (b) only vertical axis C. (c) only D. (a). (b) E. (a), (b), (c)