The magnitude of the Poynting vector of a planar electromagnetic wave has an average value of 0.724 W/m2. What is the maximum value of the magnetic field in the wave? (c = 3.0 × 108 m/s, ?0 = 4? × 10-7 T ? m/A, ?0 = 8.85 × 10-12 C2/N ? m2)
A) 77.9 nT
B) 55.1 nT
C) 38.9 nT
D) 108 nT
E) 156 nT
Answer: A
Physics & Space Science
You might also like to view...
If an unbalanced force of 8 N force acts on a 7-kg object, what is its acceleration?
a. 56 m/s2 b. 1.1 m/s2 c. 0.88 m/s2 d. 15 m/s2 e. cannot be determined
Physics & Space Science
Where did the asteroid that is believed responsible for the extinction of the dinosaurs hit the surface of the Earth?
A) in Siberia in Russia B) in the desert in Arizona C) in the middle of the Pacific Ocean D) in the Yucatan peninsula in Mexico
Physics & Space Science
The largest reserve of energy in the United States is in what form?
a. Oil b. Natural gas c. Coal d. Nuclear
Physics & Space Science
__________________ is the agitation among the molecules and/or atoms of a body
Fill in the blank(s) with correct word
Physics & Space Science