The photo shows a system that consists of a person on a diving board. What change could you make to the system that would decrease its total energy? A. Replace the diver with someone who has more mass.

B. Decrease the height of the diving board.

C. Increase the length of the diving board.

D. Increase the height of the diving board.

*If you do not know the answer, then DON'T respond. I will report you. Also, explanations are appreciated but if not then that's fine.

Consider each of the electric- and magnetic-field orientations given next. in each case, what is the direction of propagation of the wave? a)\vec ein the +xdirection,\vec bin the +ydirection. choose+ x direction- x direction+ y direction- y direction+ z direction- z direction b)\vec ein the -y direction,\vec bin the +x choose+ x direction- x direction+ y direction- y direction+ z direction- z direction c)\vec ein the +z direction,\vec bin the -x direction. choose+ x direction- x direction+ y direction- y direction+ z direction- z direction d)\vec ein the +y direction,\vec bin the -z direction. choose+ x direction- x direction+ y direction- y direction+ z direction- z direction