Two pebbles are dropped into a pool of water as shown. If a new wave with a greater amplitude results, which kind of wave interaction has occurred?
O A. Destructive interference
O B. Diffraction gradient
O C. Diffraction subtraction
O D. Constructive interference

In order to place a satellite into orbit, it requires enough fuel to supply the necessary mechanical energy. into what types of mechanical energy does the fuel get transformed?

Animals respond in various ways to stimuli detected through their senses. some of these responses are stimulated by the presence of danger. which of these animal responses is the best example of a response to an immediate threat? a) a rooster crows every morning at the first sign of light. b) as something approaches an octopus, it shoots a cloud of ink. c) from late fall until spring, bears hibernate to preserve energy. reactivate d) a dog is getting hot in the sunlight, so he moves to a shaded area.

The most important difference between a wedge and an inclined plane is a. their size b. their shape c. how they are used d. what they are made of