Two rays of light from the same source destructively interfere if their path lengths differ by how much

an ion is a charged atom or molecule. it is charged because the number of electrons do not equal the number of protons in the atom or molecule. an atom can acquire a positive charge or a negative charge depending on whether the number of electrons in an atom is greater or less then the number of protons in the atom.

massxgravity x heght=weightxheight= pe

4900=490xh

h=10

d. platinum would have the greatest temperature increase because it has the lowest specific heat.