At its tallest point a rollercoaster lifts participants to a height of 115 m. The combined mass of a fully loaded coaster train with participants that each weigh 100kg is a total of 4,500 kg. Calculate the gravitational potential energy of the coaster train and its riders relative to the ground using the formula U9= mgh. Assume the acceleration due to gravity on Earth g= 10 m/s/s. 115,000 J
51,750,000 J
1,150,000 J
5,175,000 J

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