Which statement best describes why the universe could be considered an isolated system? (2 points) Select one: a. All matter that enters the universe remains contained within the universe. b. Energy and matter are created in the universe; when new energy is created, old energy exits. c. In the universe, all energy and matter are contained; no energy or matter enters or exits. d. The universe is a contained system where no energy exits.

the working equation for the angular size is the product of the physical size and 360 degrees divided by the product of two pi and distance from earth. the minimum size would be 0.559 degrees while the maximum size would be 0.49 degrees. 

dec 23, 2016 - a load of bricks weighing 680 n a distance of 10 m across a parking lot. if if the worker pushes the cart with a constant force of 209 n, what work= force x distance = 220 n x 10 m = 2200 n.m = 2200 j i don't know where the person got it from, but the initial part, work= force x distance me.