Symbol-atomic number-mass number- Ca. 20. (blank)

#neutrons-#protons-#electrons-
(blank) 20. 18

atom or ion (include charge)
+2 Cation

-isotope or atom
isotope

Mechanical energy is when the amount of kinetic and potential energies added together remains the same. conserved created lost

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length (in m) of a column of water 1.45 km high for a temperature increase of 1.12°c. assume the column is not free to expand sideways. as a model of the ocean, that is a reasonable approximation, as only parts of the ocean very close to

Use 4 to 5 complete sentences, explain the concepts of beats and how beats are produces.