Chapter 32, Problem 32.2E

Consider each of the electric- and magnetic-field orientations given next. In each case, what is the direction of propagation of the wave? (a) $\stackrel{\to }{E}$ in the +x-direction, $\stackrel{\to }{B}$ in the +y-direction; (b) $\stackrel{\to }{E}$in the −y-direction, $\stackrel{\to }{B}$ in the +x-direction; (c) $\stackrel{\to }{E}$ in the +z-direction, $\stackrel{\to }{B}$ in the −x-direction; (d) $\stackrel{\to }{E}$ in the +y-direction, $\stackrel{\to }{B}$ in the −z-direction.