Two spaceships are traveling past earth at 90% of the speed of light in opposite directions (i. e., they are approaching each other). one turns on a searchlight, which is seen by scientists aboard the other. what speed do the scientists measure for this light (c = speed of light in a vacuum)?

In this experiment, you will use a track, a toy car, and some washers to explore newton’s first two laws of motion. you will make observations and collect data regarding the motion of these objects. in the space below, write a general scientific question that you will answer by doing this experiment.

Describe the path of a ray that approaches a mirror parallel to the principal axis.

What effects result when there is an impact between earth and an asteroid? check all that apply. a. massive flooding. b. extinction of many life forms. c.major earthquakes change in average global temperature. d. giant dust cloud