College physics 1 analysis review
Dimensional Analysis
Technique to check the correctness of an equation or to assist in deriving an
equation
Dimensions (length, mass, time, combinations) can be treated as algebraic
quantities.
Add, subtract, multiply, di
College Physics 1 models review
Models of Matter
Some Greeks thought matter is made of atoms.
No additional structure
JJ Thomson (1897) found electrons and showed atoms had structure.
Rutherford (1911) determined a central nucleus surrounded by electrons.
College Physics 1 fundamentals review
Physics
Fundamental Science
Concerned with the fundamental principles of the Universe
Foundation of other physical sciences
Has simplicity of fundamental concepts
Physics, cont.
Divided into six major areas:
Classical
College Physics 1 conversion review
Conversion
Always include units for every quantity, you can carry the units through the entire
calculation.
Will help detect possible errors
Multiply original value by a ratio equal to one.
Example:
Note the value insid
College Physics 1 overview review
Classical Physics Overview
Classical physics includes principles in many branches developed before 1900.
Mechanics
Major developments by Newton, and continuing through the 18th
century
Thermodynamics, optics and electroma
College physics 1 significant figures review
Significant Figures
A significant figure is one that is reliably known.
Zeros may or may not be significant.
Those used to position the decimal point are not significant.
To remove ambiguity, use scientific not
College physics 1 reasonable review
Reasonableness of Results
When solving a problem, you need to check your answer to see if it seems
reasonable.
Reviewing the tables of approximate values for length, mass, and time will help
you test for reasonableness.
College physics 1 quiz 2 review
Using Order of Magnitude
Estimating too high for one number is often canceled by estimating too low for
another number.
The resulting order of magnitude is generally reliable within about a
factor of 10.
Working the problem
College physics 1 quiz 1 review
Significant Figures
A significant figure is one that is reliably known.
Zeros may or may not be significant.
Those used to position the decimal point are not significant.
To remove ambiguity, use scientific notation.
In a m
College Physics 1 quantities review
Standards of Fundamental Quantities
Standardized systems
Agreed upon by some authority, usually a governmental body
SI Systme International
Agreed to in 1960 by an international committee
Main system used in this text
F