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Chapter 1 Physics


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What is a unit?
A unique name we assign to measures of a quantity.
What is a standard?
Something we compare a measure of each physical quantity in its own units.
What is a base standard?
The internationally agreed upon standards which all other physical measures are based upon.
What is the International System of Units (SI)?
Seven internationally agreed upon base quantities, thereby forming the basis of the International System of Units, abbreviated SI from its French name and popularly known as the metric system.
What is a conversion factor?
A ratio of units equal to 1.
What is a meter?
The meter is the length of the path traveled by light in a vacuum during a time interval of 1/299792458 of a second.
What is a kilogram?
A platinum–iridium cylinder kept at the International Bureau of Weights and Measures near Paris and assigned, by international agreement, a mass of 1 kilogram.
What is an atomic mass unit?
1.6605402 x 10^-27 kg (the mass of one hydrogen atom.
What are the three base units of SI?
1. length: m
2. mass: kg
3. time: s
What does the prefix "kilo-" mean?
What does the prefix "mega-" mean?
What does the prefix "centi-" mean?
What does the prefix "milli-" mean?
What does the prefix "micro-" mean?
What does the prefix "nano-" mean?
What does the prefix "pico-" mean?

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