A physicist measures the speed of an electromagnetic wave as 1.3 x 10^8 m/s × in a medium. What is the index of refraction of the medium? A. 0.43 B. 2.3 C. 2.5 D. 3.9

4. If the intensity of a light source on a surface is 1000 Watts per square meter, find the electric field magnitude of the electromagnetic wave. B? P-1000, A=! blan chamm

A sinusoidal electromagnetic wave has a peak electric field of 8.00 kV/m  What is the intensity of the wave? a. 21 kW/m2 b. 11 kW/m2 c. 170 kW/m2 d. 85 kW/m2

A plane electromagnetic wave propagates in the +y direction. at a spacific time and position in space, the magnetic feild points in the negative z direction . Where is the electric feild directed? a . +x direction  b. −x direction c. +y direction d. -y direction  c. +z direc

1.155x10'T B Copyright © 2004 Pearson Education, Inc., publishing as Addison Wesley. In the above shown electromagnetic wave, the amplitude of one of the field component is given. Calculate the amplitude of the other field component? O a. 36.36V/m O b. 32.25V/m O c. 3.85x10-16V/m O d. 34.65V/m e. 41.31V/m

1. What is the maximum electric field strength in an electromagnetic wave that has a maximum magnetic field strength of 4.20×10-4 T (about 10 times the Earth’s)?   This is not and will not be graded

Which of the following wavelengths is associated with the highest amount of energy? a.  440nm b. 700nm c. 550nm d. 680nm

The intensity of light decreases as the inverse square of the distance from the source. Does this mean that light energy is lost? Explain.

2. A satellite orbiting the Earth is powered by photovoltaic ("solar") panels that convert light energy to electricity with a conversion rate of 15.0%. Telemetry from the satellite indicates that the panels are supplying a peak power output of 3.60 kW, and the specifications of the panels state that they have 16 m² of light-collecting surface area. The radius of the Sun and its distance from Earth have long been known to be 6.96 × 108 m and 1.50 × 10¹¹ m, respectively. Assume the Sun radiates approximately as a blackbody and calculate the surface temperature of the Sun.

If a beam of polarized light has one-tenth of its initial intensity after passing through an analyzer, what is the angle between the axis of the analyzer and the initial amplitude of the beam? a. 68.214° b. 70.478 c. 71.565° d. 86.214°