16. An electromagnetic wave has an electric field with a peak value of 250 N/C. What is the average intensity of the wave? A) 0.66 W/m2 B) 0.89 W/m² C) 83 W/m2 D) 120 W/m² E) 170 W/m2 Ans: C
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- An electromagnetic plane wave has an intensity Saverage = 800 W/m?. What are the rms values Ems and Bms of the electric and magnetic fields, respectively? Erms = V/m Brms = T What are the amplitudes Eo and Bo of the electric and magnetic fields, respectively? Eo = V/m Bo = TThe magnetic field of an electromagnetic wave is given by B(x,t) = (0.60 μT) sin [(7.00 × 10° m¯)x-(2.10 x 10 s¯)] Calculate the amplitude Eo of the electric field. Calculate the speed v. Calculate the frequency f. Calculate the period T. Calculate the wavelength A. N/C Eo D= m/s s = Hz T= S 1= E3. What is the maximum electric field strength of an electromagnetic wave whose maximum magnetic field strength is 0.75 T?
- An electromagnetic wave in a vacuum has a magnetic field with a magnitude of 1.75 x 10-6 T. What is the intensity S of the wave? S = i ! J/(s·m^2) V eTextbook and Media 4EM radiation has an average intensity of 2200 W/m2. Which of the following statements about the E or B fields in this radiation is correct? a. Emax = 910.3 N/C b. Erms = 1020.1 N/C c. Brms = 3.03 x 10-6 T d. Bmax = 6.06 x 10-6 TThe intensity of sunlight striking Earth's upper atmosphere is approximately 1.35 × 10^3 W/m^2. a. Calculate Emax at this location assuming a single sinusoidal electromagnetic wave. Express your answer to three significant digits and include the appropriate units. b. Calculate Bmax at this location assuming a single sinusoidal electromagnetic wave. Express your answer to three significant digits and include the appropriate units. c. Given that Earth is 1.5 ×× 101111 mm from the Sun, what is the power output of the Sun? Express your answer to two significant digits and include the appropriate units. d. If all the sunlight that strikes the upper atmosphere reached Earth's surface, how many watts of power would reach Earth's surface? (Hint: The Earth-Sun distance is so great that you can assume all the sunlight is perpendicular to the cross-section of Earth.) Express your answer to three significant digits and include the appropriate units.
- 3. On a cloudless day, the sunlight that reaches the surface of the earth has an intensity of about 1.50 x 103 W/m². What is the electromagnetic energy contained in 5.10 m3 of space just above the earth's surface?Electromagnetic radiation from the sun reaches the earth at a rate 1370W/m^2. The radius of the sun is 6.96x10^8m and the distance from the center of the sun to earth is 1.5x10^11. Assume solar radiation reaches sun as single wave. A) what is the electric field amplitude of solar radiation when it reaches earth ? b)what is total energy radiated by sun in 2.5 seconds give answer in J c) if we assume sun emits like a black oft with emissivity e=1 calculate the temperature on the surface of Sun in Celsius Please show workA beam of light passes from air into fused quartz. Which of the following is true about the electromagnetic wave as it passes into the new medium? Material Fluorite Fused Quartz Sapphire Diamond ... Index of Refraction 1.40 1.50 1.79 2.42 A) Wavelength stays constant, frequency and speed decrease B) Speed stays constant, frequency increases, wavelength decreases C Frequency stays constant, speed decreases, wavelength increases D Frequency stays constant, speed and wavelength decrease
- 3. The intensity of an electromagnetic wave is 2.85 kW/m2. The wave strikes perpendicular to a flat, 312 m2 surface that reflects 23% of its intensity and absorbs the rest. a) Find the magnitude of the force that the wave exerts on this surface. b) Find the magnitude of the electric field for this wave.What is the intensity (in W/m²) of an electromagnetic wave with a peak electric field strength of 140 V/m? W/m2Please solve and answer the question correctly please. Be sure to give the correct units and answers. Thank you!!