Aworker uses a cart to move a load of bricks weighing 680 n a distance of 10 m across a parking lot. if the worker pushes the cart with a constant force of 209 n, what amount of work does he do?

According to social exchange theory, altruistic behaviors benefit the individual who performs them. t/f

J. j. thomson’s experiment disproved the theory that an atom

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