Help ? Why is water power a renewable resource?
a
Water will always flow downhill due to gravity.
Water changes direction of flow from uphill to
b downhill, but dams and turbines are designed to
generate power from both directions.
Energy can be collected from stationary water, so
as long as there is water we can get energy.
d Water power isn't a renewable resource.

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