A100 kg individual consumes 1200 kcal of food energy a day. calculate
(a) the altitude change, in m, if the food energy content was converted entirely into lifting the indi-
vidual under normal earth gravity.
(b) the velocity, in m/s, if the food energy content was converted entirely into accelerating the indi-
vidual from rest.
(c) the final temperature, in ◦c, of a 100 kg mass of liquid water initially at the normal human body
temperature and heated with the energy content of the food. you can use a liquid water specific
heat of 4.1 kj/kg k.

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