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PHYS 2010 - Chapter 1 Notes Week 1

by: Nancy Kanarski

PHYS 2010 - Chapter 1 Notes Week 1 PHYS 2010

Marketplace > East Tennessee State University > Physics > PHYS 2010 > PHYS 2010 Chapter 1 Notes Week 1
Nancy Kanarski
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About this Document

These are the notes that Professor Dhar focused on in Chapter 1
Physics 1
Class Notes




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This 3 page Class Notes was uploaded by Nancy Kanarski on Friday August 26, 2016. The Class Notes belongs to PHYS 2010 at East Tennessee State University taught by Dhar in Fall 2016. Since its upload, it has received 62 views. For similar materials see Physics 1 in Physics at East Tennessee State University.

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Date Created: 08/26/16
Physics I – Week 1 notes  August 22­26  2 Branches of Physics  Classical  o Classical mechanics o Thermodynamics o Fluid mechanics o Electromagnetism o Optics o Wave mechanics  Modern o Special relativity and general relativity o Quantum mechanics o Nuclear physics o Statistical mechanics o Condensed Matter Forces  Contact: force is applied through collision  o (Force=mass x acceleration)  Field: force on object comes from its location in natural potential field o Position of earth and orbit around the sun Interaction (force) Strength Range Strong 1 10 m5  Electromagnetic 10­2  ­6 ­17  Weak 10 10 m Gravitational 10­43  Structure  Concept: idea or physical quantity  Law: mathematical relationship btw. physical quantities  Principle: general statement on how nature operates  Model: representation of physical system  Hypothesis: model not confirmed through experimentation  Theory: confirmed hypothesis through experiments Unit of Measurement  International standard (SI) o Length – meter (m) o Mass – kilogram (kg) o Time – seconds (s) Kilo 10 3 Giga 10 9 Milli 10 ­3 Nano 10 ­9 Mega 10 6 Tera 10 12 Micro 10 ­6 Pico 10 ­12 Scientific Notation m x 10 n  m: mantissa 1.0 < m < 10  n: exponent ­ < n <   multiplication: 10  x 10  = 10m+n m n m­n  division: 10 /10  = 10  raising to a power: (10 )  = 10mn Coordinate System  Cartesian coordinate o 2­D (x, y) o 3­D (x, y, z)  Polar coordinates  o 2­D (r, )  Conversion o Polar to Cartesian  x = rcos  y = rcos o Cartesian to polar  r = 2 2 √ x +y  tan = y/x Dimensional Analysis m ar 2 a = G 2       G =     r m ­2 [a] = LT      [r] = L    [m] = M −2 2 [G] =  LT L       [G] = L T M     [G] = m s kg ­1 M  brackets: what are the dimensions? Exponentials and Logarithms y = ax x = logay  product: loga(xy) = logax +logay  quotient: loga(x/y) = loa x – loa y  power: log (a ) = nlog y a  base 10: log  a log =10 g  base e: natural log: log  a log  e nl Scalars and Vectors  Scalar: magnitude only (mass, temperature, speed)  Vector: magnitude and direction information (velocity, force)


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