# the average standard deviation and standard error

Jun 17th, 2015
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Objectives:1. To measure the diameter of different kinds of rounds object using micrometer caliper, vernier caliper, and meter stick.2. To calculate the average standard deviation and standard error of each data set. 3. To determine the average value and its uncertainty for each measurement using number of significant figures.

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PHYSICSINTRODUCTIONAs an aviation maintenance technician, you must have a basic knowledge of physics, and the laws that govern the behavior of the materials with which you work. Physics is the science that deals with matter and energy and their interactions. Physics operates with absolutes whose properties and values behave in the same way every time. Not only do these absolutes make flight possible, but they also allow engineers and technicians to design, build, and maintain aircraft.MATTER AND ENERGYBy definition, matter is anything that occupies space and has mass. Therefore, the air, water, and food you need to live, as well as the aircraft you maintain, are all forms of matter. The Law of Conservation states that matter cannot be created or destroyed. You can, however, change the characteristics of matter. When matter changes state, energy, which is the ability of matter to do work, can be extracted. For example, as coal is heated it changes from a solid to a combustible gas which produces heat energy.CHEMICAL NATURE OF MATTERIn order to better understand the characteristics of matter it is typically broken down to smaller units. The smallest unit that can exist is the atom. The three subatomic particles that form atoms are protons, neutrons, and electrons. The positively charged protons and neutrally charged neutrons coexist in an atom's nucleus. However, the negatively charged electronsorbit around the nucleus in orderly rings, or shells. The hydrogen ato

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