The atom was not discovered all at once. Rather, a series of hypotheses and experiments over many, many years combined to form the model of the atom that is accepted today. As technology improves, so does our understanding of the atom. Which of the following is true considering the atomic theory?Immersive Reader Once enough data is gathered the atomic theory will eventually become a law. The atomic theory is considered a theory and not a law because it lacks sufficient evidence to be considered a law. The atomic theory is highly supported by scientific evidence and experimentation. The atomic theory is not considered a law because it simply states what matter is made of and does not explain the characteristics of matter.

Which changes of state do the labels represent? a: b: c:

Several mountains together form a mountain . a few of these combined form a mountain system. several systems combined form a mountain , which can stretch thousands of miles in length.

Suppose water is leaking from a tank through a circular hole of area ah at its bottom. when water leaks through a hole, friction and contraction of the stream near the hole reduce the volume of water leaving the tank per second to cah 2gh , where c (0 < c < 1) is an empirical constant. a tank in the form of a right-circular cone standing on end, vertex down, is leaking water through a circular hole in its bottom. (assume the removed apex of the cone is of negligible height and volume.) (a) suppose the tank is 20 feet high and has radius 8 feet and the circular hole has radius 2 inches. the differential equation governing the height h in feet of water leaking from a tank after t seconds is dh dt = − 5 6h3/2 . if the height of the water is initially 8 feet, how long will it take the tank to empty? (round your answer to two decimal places.)