At time t = 0 an electron at the origin is subjected to a force that briefly acc
ID: 1806009 • Letter: A
Question
At time t = 0 an electron at the origin is subjected to a force that briefly accelerates it in the +z direction, with an acceleration of 6 1017 m/s^2. Before trying to answer the following questions, draw a clear diagram. Location D is ?28, 0, 0 m, and location H is at 0, 13, 0 m. (a) At what time is a radiative electric field first detected at location D? (b) What is the direction of propagation of electromagnetic radiation that is detected at location D? (c) What is the direction of the radiative electric field observed at location D? (d) What is the magnitude of the radiative electric field observed at location D? (e) What is the direction of the radiative magnetic field observed at location D? (f) What is the magnitude of the radiative magnetic field observed at location D? (g) At what time is a radiative electric field first detected at location H? (h) What is the direction of propagation of electromagnetic radiation that is detected at location H? (i) What is the direction of the radiative electric field observed at location H? (j) What is the magnitude of the radiative electric field observed at location H? (k) What is the direction of the radiative magnetic field observed at location H? (l) What is the magnitude of the radiative magnetic field observed at location H?Explanation / Answer
location D r=22 location H r=13 plug those values into the equation for radiative electric field (that you have provided) and you'll be correct. Make sure you take the absolute value of the answer you get though because it is asking for magnitude. Also forget about the mass, it is irrelevant in this problem. To get the magnitude of the radiative magnetic field, take the magnitude of the electric field at that location and divide by c.
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