Astone thrown horizontally at a speed of 5m/s from the top of a cliff 78.4m high.
a. how long does it take the stone to reach the bottom of the cliff?
b. how far from the base of the cliff does the stone strike the ground?

How many molecules are present in 3 mols of silicon dioxide (sio2)?

On a geologic map, if the contacts between sedimentary rock units form a bull’s-eye pattern of concentric circles, with the youngest unit in the center, the underlying structure is a(n)

Which statement is the best definition of an atom? a) anything that has mass and occupies space. b) the smallest particle that has the properties of an element. c) a substance that cannot be broken down chemically into simpler substances. eliminate d) the smallest unit of a substance that exhibits all of the properties characteristic of that substance.