Physics is the science of measurement. Numbers obtained by direct measurement are important and are therefore referred to as significant. The order of magnitude of a number is the power of ten that is nearest that number. Determining the order of magnitude of a number is useful when performing an estimate of a calculation involving many large numbers. Solve the following problems and place the answers on a separate sheet of paper.
1. Determine the number of significant figures (numbers) in the following:
2. Determine the order of magnitude of the following: