In lab, you calculate the density of an iron rod to be 7.30 g/cm3. The accepted value for the density of iron is 7.80 g/cm3. What is your percent error?

Barry is applying the principles of relative dating to a building that has been constructed. analyzing a section of the building, barry says that the lowest part of the section must have been constructed the parts above it were constructed. he bases this conclusion on the principle of . also, looking at a crack forming in the building wall, he says that the crack must be the wall. barry used the principle of to arrive at this conclusion.