Using what you have learned about the many models developed to describe an atom, infer why the model had to change as new information came to light? Defend why this is true or false of all scientific models and theories.

Explain the comparisons between nature and packingtown that appears on pages 81 and 82 answer

Asmall object with mass 0.200 kg swings back and forth on the lower end of a light rope that is 3.00 m long. the upper end of the rope is attached to the ceiling. as the object swings through its lowest position, where the rope is vertical, the speed of the object is 5.80 m/s. at this point in the motion, what is the tension in the rope? (use g = 9.80 m/s2.)

Observations show that interstellar clouds can have almost any shape and