An electromagnetic wave with components Ey = Eo sin(kx - ùt) and Bz = Bo sin(kx - ùt) is a wave traveling in t?
A) negative x-direction.
B) y-direction.
C) x-direction.
D) z-direction.
E) cannot be determined with the information given
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C) x-direction its perpendicular to both the E field and B field
C) The x direction.
The energy flow vector is called the Poynting vector and its direction is given by the vector (cross) product of the electric and magnetic field vectors; it is perpendicular to both E and B vectors, so must be in the x-direction.
See bottom half of link.