Scientist once believed that the structire of the universe had changed very little

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

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island

Astone is dropped from a cliff and falls 9.44 meters. what is the speed of the stone when it reaches the ground? a. 13.6 m/sec b. 1.39 m/sec c. 185 m/sec d. 9.80 m/sec