The fastest human spaceship leaving the solar system is Voyager 1, which is traveling at 61,146 kilometers per hour. Imagine it is traveling to a star system 8.3 light-years away. How long, in years, will it take for Voyager 1 to arrive?

Explain one reason why disorders are not easy to classify.

Among the following environmental factors, which does not have a long-term impact on the composition of a region's soil? a. kinds of crops grown b. types of fungi present c. topography of the landscape d. variety of species of mammals e. number of freezes occurring annually

You find a mysterious, dull substance on the ground and pick it up for a closer look. it is powdery, very light, and soft to the touch. the substance is most likely i. an organic mineral ii. a metallic mineral iii. a nonmetallic mineral i only ii only iii only i and ii i and iii