QUESTION 2 For problem 33.34 calculate the transmitted intensity in watts per square meter if the second polarizer has an angle of 155 degrees. 5 sig. figs.
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- A 3.00 m diameter university communications satellite dish receives TV signals that have a maximum electric field strength (for one channel) of 7.60 µV/m. (See the figure below.) What is the intensity (in watts per meter squared) of this wave? What is the power received (in watts) by the antenna? If the orbiting satellite broadcasts uniformly over an area of 1.50 1013 m2 (a large fraction of North America), how much power (in watts) does it radiate?The magnetic field component of an EM wave propagating through a nonmagnetic medium H= Ho is H = 25 • sin(2 × 10®t + 6x) ay mA/m Determine: a) The direction of wave propagation b) The permittivity of the medium c) The electric field intensitySuppose the maximum safe average intensity of microwaves for human exposure is taken to be 2.00 W/m?. If a radar unit leaks 10.0 W of microwaves (other than those sent by its antenna) uniformly in all directions, how far away, rmina must you be to be exposed to an average intensity considered to be safe? Assume that the power spreads uniformly over the area of a sphere with no complications from absorption or reflection. min m What is the maximum electric field strength Eo at this distance? The permittivity of free space is €o = 8.854 × 10-12 C²/(N-m²). The speed of light is e = 3.00 x 10° m/s. Eo V/m Note: Early radar units leaked more than modern ones do. This caused identifiable health problems, such as cataracts, for people who worked near them. Question Credit: OpenStax College Physics
- If the Average Power Density of an antenna is given as: 60sin (0) Wav = (WIm²) a) What is the value of the Average Power Density at (0 = 30°) and (r = 2 m) = %3D (W/m?) b) What is the value of the Radiation Intensity at (0 = 45°) and (r = 3 m) = %3D %3D (W/Steradian) c) What do we call an antenna that has repeated (more than one identical) elements?An intense light source radiates uniformly in all directions. At a distance of 5.0m from source, the radiation pressure on a perfectly absorbing surface 9 micro pascals. What is the total average power output of the source?A circular loop of wire can be used as a radio antenna. If an 19.8-cm-diameter antenna is located 3.00 km from a 88.9 MHz source with a total power of 60.1 kW, what is the maximum emf induced in the loop? The orientation of the antenna loop and the polarization of the wave are as shown in (Figure 1). Assume that the source radiates uniformly in all directions. Figure In vicinity of loop, wave propagates in +x-direction. In vicinity of loop. E has only a y-component and B has only a 2-component. E B 1 of 1 > Circular loop antenna lies in xy-plane. ▼ Answer Requested Part G Determine the time-dependent induced emf in the loop. Express your answer in terms of the variables BMax, w, k, d, z, and t. ▸ View Available Hint(s) IVE ΑΣΦ E(x, t) = Submit Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining Part H Complete previous part(s) EVALUATE Part I Complete previous part(s) ?
- The average intensity within the 3.4-mm radius circular spot illuminated by a helium-neon laser pointer is 53.5 W/m². (a) What is the peak amplitude of the beam's electric field component? Emax = |0.53 N/C (b) What is the rms amplitude of the beam's magnetic field component? Brms = 0.00125 X HT (c) What is the average output power of the laser? Pav = 7.77 avg x mW9: Please help answer this ASAPWhat is the average pressure that a normally indecent sinusoidal plane EM wave would exert on reflecting surface if its RMS magnetic field strength is 0.986 millitesla. answer in N/m2
- 5) A source of a beam of natural light of intensity 3 kW/m2, three ideal polarizers 1, 2, and 3, and an observer. Polarizer axis angles are measured clockwise from the vertical, as viewed by the observer. The axis angle of polarizer 1 is set at 0° (vertical), and the axis angle of polarizer 2 is set at 60°. The axis angle of polarizer 3 is set at 50°. What is the intensity of the beam at the observer? (Show your work step by step) (Assume the helium-neon lasers commonly used in student physics laboratories have power outputs of 0.49 mW. (a) If such a laser beam is projected onto a circular spot 1.3 mm in diameter, what is its intensity? I= W m (b) Find the peak magnetic field strength. Bo= T (c) Find the peak electric field strength. E₁= V m