(Solved): Please ans both 1. Suppose a plane electromagnetic wave propagates in space with an eletric field ...

Please ans both

1. Suppose a plane electromagnetic wave propagates in space with an eletric field giv by \( \vec{E}=E_{0} \hat{j} \) and a magnetic field given by \( \vec{B}=\frac{E_{0}}{c} \hat{k} \). The Poynting vector \( \vec{S} \) is given by: A. \( \frac{E_{0}^{2}}{\mu_{0}} \hat{i} \) B. \( -\frac{E_{0}^{2}}{\mu_{0 c}} \hat{i} \) C. \( \frac{E_{0}^{2}}{\mu_{0}} j \) D. \( -\frac{E_{0}^{2}}{\mu_{0} c} \hat{k} \) 2. Minnie Mouse wishes to purchase the shortest mirror which allows her to see from the bottom of her feet to the top of her hat. Suppose Minnie's eye level is \( 0.453 \) meters? Moreover, suppose the top of her hat is \( 0.123 \) meters above eye level? What is the length of mirror? A. .191 m B. \( .288 \mathrm{~m} \) C. \( .417 \mathrm{~m} \) D. \( .576 \mathrm{~m} \)