. At one position and fime, an em wave field magnitude of 1.99 mT. Calculate its
ID: 2029526 • Letter: #
Question
. At one position and fime, an em wave field magnitude of 1.99 mT. Calculate its wave speed. in an insulator has an electric hield magnitude of 311 kVm and a magnetie the metric prefixes with their EQUATION USED SOLUTION em wave moving in vacuum cular to a perfectly reflecting surface exerts a radiation of 518 Pa on that surface. Find the intensity of that em wave EQUATION USED (ONE SIGN SOLUTION ANSWER 3. At one position and time, the electric tield of an em wave in vacuum is 7.65 MV/m toward the top (f) and its magnetic field is 25.5 mI out of the paper (O). Find the corresponding Poynting vector. ANSWER Here I use --in calculating the magnitude. MAGNITUDE DIRECTION 4. A linearly-polarized em wave of intensity 246 MW/m2 moves through (nonmagnetic) zircon, which has a permittivity of 3.27×10-11 Fin forthis em wave. Findthe electric field amplitude of this em wave. EQUATION USED (ONE SIGN) SOLUTION ANSWER a slow truck, traveling south a of sound is 342 m/s. The truck is blasting that 18 m/s. (Thus, you are moving apart at 47 m/s.) The speed you (You should compl positive (+) direction. Finally, add two arrows (with si ONE EQUATION USED hear to be at 122 Hz. Find the frequency that the truck driver hears from her horn.g a horn that O. Then draw an arrow showing the numbers) showing the L and S velocity components.) SOLUTION ANSWER The truck driver has no speed relative to her horn, so she hears (Fill in the subscript.) u O you truckExplanation / Answer
1)
Given:
E = 311 kV/m = 311,000 V/m
B = 1.99 mT = 0.00199 T
Velocity of light is equal to the ratio of magnitude of electric field vector and the magnitude of magnetic field vector
Thus:
v = E/B
= 311000/0.00199
= 1.56 x 108 m/s
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