Average atomic must be
calculated in order to analyze the
total abundance of all the isotopes of
that atom.
o number
o mass
valence

Arock is dropped from a cliff and reaches the ground in 2.70s. at the same time another rock is thrown horizontally from the same height with initial x velocity of 0.95 m/s. what distance will in x will the second rock cover?

Find the momentum for a 2.6-kg brick parachuting straight downward at a constant speed of 8.4 m/s .

Do you agree with scientist’s prediction about the warming of alaska and other polar regions?