Calculate the speed at which the source should be moving away if the red light frequency is observed at half its original value. (fr-4.62×1014Hz)
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- 2. An electromagnetic wave hits a student (in air) who measures a maximum electric field of E = (6.00 -10ʻV/m)( – 2ŷ – 2)/ /6 and finds that the magnetic field is in the &+ ŷ – 2 direction. The light has a wavelength of 700 nm. (a) Find the two possible propagation vectors? K 27 Sk = 6.9 x105 m 700y1097 or ho here V. (b) Find the angular frequency? untime (c) Find the amplitude of the magnetic field? (6x10"Vm) here too (d) Write down two different possible arguments of the wave phase factor [x is the argument of f(x)].Question: A plane electromagnetic wave with frequency f = 205 kHz propagates in a vacuum in the positive y-axis with its electric field oriented along the z-axis. The amplitude of the electric field is Emaz = 10.0 V/m. We choose a start time such that at t = 0s the electric field is zero at the origin and we represent the oscillating electric field by: E(y, t) = A sin(ky – wt + 6). Part 1) Calculate the: Amplitude A = V/m Angular frequency w = rad/s -1 Wave numberk = Phase o = rad Part 2) Using your values from part 1, calculate the electric field components of this electromagnetic wave at y = 4.51 m and t = 1.52 s. E = Î+ |k V/m Part 3) Now calculate the magnetic field components of this electromagnetic wave at y = 4.51 m and t = 1.52 s- k TA distant galaxy is simultaneously rotating and receding from the earth. As the drawing shows, the galactic center is receding from the earth at a relative speed of ug = 1.6000 × 106 m/s. Relative to the center, the tangential speed is VT=0.3800 × 106 m/s for locations A and B, which are equidistant from the center. When the frequencies of the light coming from regions A and B are measured on earth, they are not the same and each is different from the emitted frequency of 8.366 x 10¹4 Hz. Find the measured frequency for the light from (a) region A and (b) region B. (Give your answer to 4 significant digits. Use 2.998 × 108 m/s as the speed of light.) A "TY (a) Number i Number i Galaxy ING Earth ד". B Units Units
- A strip of metal foil with a mass of 5.00 × 10-7 kg is suspended in a vacuum and exposed to a pulse of light. The velocity of the foil changes from zero to 1.00 × 10-3 m/s in the same direction as the initial light pulse, and the light pulse is entirely reflected from the surface of the foil. Given that the wavelength of the light is 450 nm, and assuming that this wavelength is the same before and after the collision, how many photons in the pulse collide with the foil?Processes at the center of a nearby galaxy cause the emission of electromagnetic radiation at a frequency of 3.97×1013 Hz.Detectors on Earth measure the frequency of this radiation as 3.11×1013 Hz. How fast is the galaxy receding from Earth?An electromagnetic wave in vacuum travels in the +x-direction with Emax = 455 V/m and a wavelength of 12.7 m. Calculate the x-component of its Poynting vector at x = 0, t = 0.13 μs. (Use c = 2.9979 × 108 m/s)
- Assuming that Eq. 37-36 holds, find how fast you would have to go through a red light to have it appear green. Take 620 nm as the wavelength of red light and 540 nm as the wavelength of green light.An anstonomer on a planet orbiting the star Deneb wants to differentiate the reflected light by Earth from the light of the Sun. First, consider the area of Earths disk which reflects the Sun's intercepted light. Second, consider the surface area of a sphere with the same radius as Earths orbit around the Sun. Take the ratio of these two areas. Assume the Earths radius is 6400.0 km and is 1.3 x108 km from the Sun.A radar pulse returns 4.0 × 10−4 seconds after it is sent out to hit (and get reflected by) an airplane. What is the distance between the radar antenna and the airplane?
- Asap plzzzImagine you are at a location where some incident light source provides light at an intensity of 10 W/m^2 Now you move to double your distance from the light source (aka your distance is 2 times its initial value) What is the intensity of the light at this new location (in units of W/m^2, provide only the number)? hp & %23 24 7 8. 3 4. y u e r j k b .. .. * 00 InConsider an electromagnetic wave with a maximum magnetic field strength of 4.5 × 10-4 T. What is the maximum electric field strength in the wave in kV/m?