The magnitude of the magnetic field at point P for a certain electromagnetic wave is 2.12 T. What is the magnitude of the electric field for that wave at P? (c = 3.0 108 m/s)
A) 745 N/C B) 636 N/C C) 5.23 N/C D) 7.45 N/C E) 6.36 N/C
Question 2
With respect to the earth, object 1 is moving at speed 0.90 c to the right. Object 2 is moving in the same direction at speed 0.70 c with respect to object 1. How fast is object 2 moving with respect to the earth?
A)
0.64 c
B)
1.6 c
C)
0.16 c
D)
0.80 c
E)
0.98 c
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