Aristarchus measured the relative sizes of the earth, moon, and sun using eclipses and phase timings. since the moon is smaller than the earth and orbits the earth and the earth is smaller than the sun, he deduced that the earth must orbit the sun. this last phrase is what part of the scientific method?
a) observation.
b) theory.
c) prediction based on theory.
d) observation of prediction.
e) confirm/refute/modify theory.

An ascending elevator, hanging from a cable, is coming to a stop. part a part complete identify all forces acting on the elevator from the list below. select all that apply. select all that apply. kinetic friction normal force tension weight static friction submitprevious answers correct part b draw a free-body diagram of the object. draw the vectors starting at the black dot. the location and orientation of the vectors will be graded. the exact length of your vectors will not be graded but the relative length of one to the other will be graded.