Show how orbital speed depends on distance from the galactic center for a galaxy with constant mass density within 20,000 light-years of its center, and zero density beyond
that distance.

Tafari worked one summer on a ship that set weather buoys in the ocean. he watched how one of the buoys moved in the water. describe which parts of the wave would cause the buoy to bob up and down. which wave property determined how fast the buoys bobbed in the water? he observed that when the wind blew harder, the ocean waves were larger, and the buoys moved away from the ship. what effect, if any, did the waves have on how far the buoys moved? explain your answer.

In automobile steering wheel is shown what is the ideal mechanical advantage blank? if the ama is eight what is the efficiency of the steering wheel?

Complete the sentence to describe the law of conservation of energy. the law of conservation of energy states that energy cannot be created