The atomic number of phosphours is blank It has zero charge because it has blank electrons.

Which units can be used to measure length or distance? check all that apply. gram meter kilometer liter inch

Ascientific blank must be testable and capable of being proven false?

An owl dives toward the ground with a constant velocity of 4.40 m/s at 53.0° below the horizontal. the sun is directly overhead and casts a shadow of the owl directly below it. what is the speed (in m/s) of its shadow on level ground?