If patrick rolls a ball down a hill, What will slow it down

Apassenger walks toward the rear of a moving train. describe her motion as seen from a reference point on the train. then describe it from a reference point on the ground

The electronic structure or chlorine is 2.8.7 what is the electronic structure of fluorine?

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