Asolar system is composed of
a. several galaxies that are joined together.
b. planets but not the star that they orbit.
c. everything in existence.
d. a star and all the objects in orbit around it.

What is tan(61)? а. 1.80 b. 0.49 c. 0.61 d. 0.87

How is coal extracted from mountaintop removal mines? a. dynamite is used to create underground tunnels where miners go to extract the coal. b. dynamite is used to break apart rocks and then draglines are used to remove the broken rock and reach the coal. c. coal in mountaintops is extracted by digging strips in the landscape to reach the coal. d. placer deposits in mountain river bottoms are removed by

1. a net force of 100 newton’s is applied to a wagon for 5 seconds. this causes the wagon to undergo a change in momentum of