In a certain binary-star system, each star has the same mass which is 3.2 times of that of the Sun, and they revolve about their center of mass. The distance between them is the 6.3 times the distance between Earth and the Sun. What is their period of revolution in years?

Most energy in an ecosystem comes originally from_

Energy is the ability to do work which measures what

An object starts from rest at point f and speeds up continuously as it moves around an oval. a. choose a point about 1/8 th of the way around the oval from point f, and label it point g. draw a vector to represent the velocity of the object at point g. b. determine the change in velocity vector   between points f and g.