Is the earth getting larger as more sea floor is added? explain

What best describes a sonar wave? transverse and electromagnetic transverse and mechanical longitudinal and electromagnetic longitudinal and mechanical

"an open tank has the shape of a right circular cone. the tank is 6 feet across the top and 5 feet high. how much work is done in emptying the tank by pumping the water over the top edge? note: the density of water is 62.4 lbs per cubic foot."

Which of the following are not typically included in the periodic table? a. atomic mass b. element symbol c. isotopes d. number of electrons