Compute the velocity of light in diamond, which has a dielectric constant of 5.5 (at frequencies within the visible range) and a magnetic susceptibility of 2.17 × 10-5 (
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Compute the velocity of light in diamond, which has a dielectric constant of 5.5 (at
frequencies within the visible range) and a magnetic susceptibility of 2.17 × 10-5
(
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- On a clear day at a certain location, a 100-V/m vertical electric field exists near the Earth's surface. At the same place, the Earth's magnetic field has a magnitude of 0.500 × 10-4 T. Compute the energy densities of the electric fieldSuppose that a parallel-plate capacitor has circular plates with radius R = 30 mm and a plate separation of 4.1 mm. Suppose also that a sinusoidal potential difference with a maximum value of 120 V and a frequency of 57 Hz is applied across the plates; that is, V = (120 V) sin[2+(57 Hz)t]. Find Bmax(R), the maximum value of the induced magnetic field that occurs at r = R. Number i Units TA magnetic field is uniform over a flat, horizontal circular region with a radius of 1.70 mm, and the field varies with time. Initially the field is zero and then changes to 1.50 T, pointing upward when viewed from above, perpendicular to the circular plane, in a time of 110 ms. (a) What is the average induced emf around the border of the circular region? (Enter the magnitude in uV and the direction as seen from above.) magnitude HV direction ---Select-- v as seen from above (b) Immediately after this, in the next 70.0 ms, the magnetic field changes to a magnitude of 0.500 T, pointing downward when viewed from above. What is the average induced emf around the border of the circular region over this time period? (Enter the magnitude in uV and the direction as seen from above.) magnitude direction ---Select-- v as seen from above
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