The theory of plate tectonics a. incorporates continental drift but not seafloor spreading b. incorporates seafloor spreading but not continental drift c. incorporates and explains both seafloor spreading and continental drift d. does not incorporate seafloor spreading or continental drift

8. why do radio telescopes convert radio waves (analog signals) to electrical (digital) signals for analysis? (hint: what did the article say about the advantages of digital signals? )

Aball tossed vertically upward from the ground next to a building passes the bottom of a window 1.8 s after being tossed and passes the top of the window 0.20 s later. the window is 2.0 m high from top to bottom. what was the ball's initial velocity? the unit vector j^ is directed upward. how far is the bottom of the window from the launch position? how high does the ball rise above the launch position?

In a system, when potential energy decreases, then entropy also decreases. true false