Imagine repeating the experiment in an airless tube, or vacuum. Would this change the result? If so, how?

On a geologic map, if the contacts between sedimentary rock units form a bull’s-eye pattern of concentric circles, with the youngest unit in the center, the underlying structure is a(n)

Astudent weighing 700 n climbs at constant speed to the top of an 8 m vertical rope in 10 s. the average power expended by the student to overcome gravity is most nearly

What practical value did astronomy offer to ancient civilizations?