A 26.4-mW laser beam of diameter 1.87 mm is reflected at normal incidence by a perfectly reflecting mirror. Calculate the radiation pressure on the mirror. N/m2 Need Help? Read It
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- Problem 24.05. (a) What is the frequency of the 193-nm ultraviolet radiation used in laser eye surgery? (b) Assuming the accuracy with which this EM radiation can ablate the cornea is directly proportional to wavelength, how much more accurate can this UV be than the shortest visible wavelength of light?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?3
- An instructor's laser pointer produces a beam of light with a circular cross section of diameter 1.30 mm and an average power output of 8.00 mW. The beam size stays nearly constant when the instructor uses the laser pointer in the classroom. What is the amplitude Eo of the electric field of the laser's light? Eo= What is the amplitude Bo of the magnetic field of the laser's light? What is the average energy density wave of the laser's light? N/C Bo= T J/m³ WaveExample The normalized radiation intensity of an antenna is defined by U(0) = sin(0), Find the: b. FNBW a. HPBW 270 300 1 240 330 210 180 150 Exam The r F a.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) ?
- Resources At some instant and location, the electric field associated with an electromagnetic wave in vacuum has the strength 85.1 V/m. Find the magnetic field strength B, the total energy density u, and the power flow per unit area, all at the same instant and location. B: S/m³ power flow per unit area: W/m? %3DWhat 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/m2An electromagnetic wave is normally incident on a flat surface. Assuming the power per unit area transmitted is S = 61.4 W/m², and the surface is a perfect absorber, what is the radiation pressure (in nPa) on the surface? nPa Need Help? Read It