The train traveled 500 kilometers north to odessa in 2 hours. what is the train's speed? what is it's velocity?

Curious carl calculated the density of a cube to be 4.50 g/cm3. what is the density of the cube in g/l?

Which subatomic particle has a negative charge

If you place a magnet under a clear dish, and sprinkle iron fillings over it, above what part of the magnet will most of the fillings gather