Which is a substance that can be separated by physical means and is not the same throughout

answer; i believe the correct answer is (40,000 j) good luck

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.

not too sure thinking all accelerations are pointed down

elctricity and magnet is conversion to it