astronomers have observed a small, massive object at the center of our milky way galaxy. a ring of material orbits this massive object; the ring has a diameter of about 15 light years and an orbital speed of about 200 km/s.

Based on the narrator's comments about living with the widow douglas, the reader can infer that a) the narrator doesn't care much for civilization and its strict rules. b) the narrator admires and wants to become more civilized and refined. c) the narrator is extremely religious and of high moral standing. d) the narrator desires to become a productive member of society.

Apopulation of bolts has a mean thickness of 20 millimeters, with a population standard deviation of .01 millimeters. give, in millimeters, a minimum and a maximum thickness that includes 68% of the population of bolts.

During which phase is the least percentage of the light that hits the moon visible from earth? new moon waxing gibbous waning crescent full moon