a doppler radar sends a pulse at 6.00x10^9 hz. it reflects off some clouds, and returns to the radar 672 hz higher. what is the speed of the clouds?

its pwirhfpiwe

explanation:

because dgjpwojefopjwp

answer: atomic mass was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

explanation:

originally atomic mass was used to arrange elements on the periodic table from left to right in a row. each column then shows similar properties of elements of a group.

in modern periodic table, the atoms are arranged in increasing atomic number. as atomic number represents the number of protons in an atom which is unique for every atom.