Cosmic microwave background radiation found uniformly spread throughout the universe is supposed to be

probably not the "magnets"in the magnet, so to speak, are thought to be electrons orbiting in shells. vurrent loops two sides to the loop

force tends to be low and long diustance masses are high

305.7

explanation:

density =m/v

density =917/3.00

density = 305.

approximately = 305.7

in four significant figures