31.28
If the intensity of the wave at point P is 0.92 W/m2, what is the electric field amplitude at that point? (c = 3.00 × 108 m/s, μ 0 = 4π × 10-7 T · m/A, ε 0 = 8.85 × 10-12 C2/N · m2)
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31.28 If the intensity of the wave at point P is 0.92 W/m2, what is the...
An electromagnetic wave has an electric field with a peak value of 130 N/C. What is the average intensity of the wave? (c = 3.00 x 108 m/s, μ0 = 4π × 10-7 T ∙ m/A, ε0 = 8.85 × 10-12 C2/N ∙ m2)
A sinusoidal electromagnetic wave is propagating in vacuum. At a given point and at a particular time the electric field is in the +x direction and the magnetic field is in the -y direction, and at that point the intensity of the wave is 0.45 W/m^2. (c = 3.0 times 10^8 m/s, mu 0 = 4 pi times 10^7 T middot m/A epsilon_0 = 8.85 times 10^-12 C^2/N middot m^2) What is the direction of propagation of the wave? What...
A tiny light source was placed in free space and radiates isotropically produces an magnetic field amplitude of 3.77×10−9 T at a point 72 m from the source. What is the power output from the source ? (c = 3.00 × 108 m/s, μ0 = 4π × 10-7 T ·m/A, ε0 = 8.85 × 10-12 C2/N · m2)
A sinusoidal electromagnetic wave is propagating in vacuum. (a) At a given point and at a particular time the electric field is in the +x direction and the magnetic field is in the -y direction. What is the direction of propagation of the wave? (b) At the above point the intensity of the wave is 0.77 W⋅m−2. What is the electric field amplitude at this point? (NOTE: μo=4π×10−7T⋅m/A and c=3.00×108m/s.)
The magnetic field of an electromagnetic wave has a peak value of 5.0 × 10-10 T. What is the intensity of the wave? (c = 3.0 × 108 m/s, c = 3.00 × 108 m/s, μ0 = 4π × 10-7 T • m/A 1.0 × 10-13 W/m2 7.5 × 105 W/m2 1.5 × 10-5 W/m2 2.0 × 10-13 W/m2 3.0 × 10-5 W/m2
A cell phone emits a 1.9 GHz electromagnetic wave. Ata location near the phone, the intensity of the wave is measured to be 0.067 W/m2 10 pt What is the amplitude of the electric field at this lo- cation? (in N/C) 18. AO 2.91 BO 3.64 EO 7.11 CO 4.55 FO 8.88 DO 5.69 GO 1.11 x 10 HO 139 x 10 part]What is the amplitude of the magnetic field at this location? (in T) 19. AO 2.37 × 10-8...
An electromagnetic wave has a maximum intensity of 83 W/m2 What is the peak magnitude of the electric field of this wave? V/m Submit Answer Tries 0/2 What is the peak magnitude of the magnetic field of this wave? Submit Answer Tries 0/2
The intensity of light is 25 W/m2. What are the amplitudes of the associated electric field and Tries 0/8 magnetic field? Tries 0/8 2 What is the electric field amplitude at a distance of 2.5 m from a 70 W lightbulb? Assume all the power of the bulb goes into light of a single color with = 500 nm and assume the bulb produces a spherical wave.
A 7.5 × 1014 Hz laser emits a 7.7-?s pulse, 5.0 mm in diameter, with a beam energy density of 0.51 J/m3. What is the amplitude of the electric field of the emitted waves? (c = 3.00 × 108 m/s, ?0 = 4? × 10-7 T ? m/A, ?0 = 8.85 × 10-12 C2/N ? m2) A) 340 kV/m B) 480 kV/m C) 240 kV/m D) 150 kV/m E) 120 kV/m Answer: A Please show all steps.
19) A 22.0-kg mirror with a surface area of 1.0 m2 and a 98% reflectivity is bombarded by light of average intensity 770.0 W/m2 at an angle of 30.0° to the normal of its surface. If the light has a duration of 0.60 s, how much does the velocity of the mirror change during that time? (c = 3.00 × 108 m/s, uo = 41 * 10-7 T.m/A, €0 = 8.85 x 10-12 C2/N·m2)