The speed of light is approximately 300,000,000 m/s. how long will it
take for the light to travel from the butter to a spectator who is scuted 30
meters away? how long will it take if the spectator is 150 meters away?

their crystal patterns have been disrupted by stress

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

hope this ! : )

the components of a vector are the parts of the vectors that are to each other.

b perpendicular