What is Newton's Second Law? 1.The attraction between objects

2.An object at rest tends to stay at rest and an object in motion tends to stay in motion unless acted upon by an unbalanced force

3.An object's acceleration depends on its mass and on the net force acting on it.

4.For every action there is an equal and opposite reaction

Laboratory experiments, observational field studies, and model-building are all examples of different forms of scientific investigations.  in what way do laboratory experiments primarily differ from other forms of scientific investigations?   a.  a laboratory experiment is the only accepted form of investigation within the scientific community.  b.  studies about how things behave in nature or studies involving very large objects are best answered through laboratory experiments.  c.  laboratory experiments involve the identification and control of variables.  d.  data can only be generated through laboratory experiments, not other forms of investigation.

(a) calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 10.0 g. silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) imagine adding electrons to the pin until the negative charge has the very large value 1.00 mc. how many electrons are added for every 109 electrons already present

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