Chip has enough concrete to pave a square area of 200 ft^2 for a backyard patio. Use the formula s= square root of A to find the length of each side of his patio round answe to nearest tenth

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.

In a given chemical reaction, the energy of the products is greater than the energy of the reactants. which statement is true for this reaction?

Atomic nuclei of almost all elements consist of