chapter1 - CollegePhysics Chapter1 Introduction...

Info iconThis preview shows pages 1–12. Sign up to view the full content.

View Full Document Right Arrow Icon
    College Physics Chapter 1 Introduction
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
    Theories and Experiments The goal of physics is to develop theories  based on experiments A physical theory is a “guess,” expressed  mathematically, about how a system works The theory makes predictions about how a  system should work Experiments check the theories’ predictions Every theory is a work in progress
Background image of page 2
    Fundamental Quantities and  Their Dimension Length [L] Mass [M] Time [T] Other physical quantities can be  constructed from these three
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
    Units To communicate the result of a  measurement for a quantity, a  unit  must  be defined Defining units allows everyone to relate  to the same fundamental amount
Background image of page 4
    Systems of Measurement Standardized systems Agreed upon by some authority, usually a  governmental body SI – Systéme International Agreed to in 1960 by an international  committee Main system used in this text
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
    Length Units SI – meter, m Defined in terms of a meter – the  distance traveled by light in a vacuum  during a given time Also establishes the value for the speed of  light in a vacuum
Background image of page 6
    Mass Units SI – kilogram, kg Defined in terms of kilogram, based on  a specific cylinder kept at the  International Bureau of Weights and  Measures
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
    Standard Kilogram
Background image of page 8
    Time Units seconds, s Defined in terms of the oscillation of  radiation from a cesium atom
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
    Approximate Values Various tables in the text show  approximate values for length, mass,  and time Note the wide range of values Lengths – Table 1.1 Masses – Table 1.2 Time intervals – Table 1.3
Background image of page 10
    Other Systems of  Measurements cgs – Gaussian system Named for the first letters of the units it  uses for fundamental quantities US Customary Everyday units Often uses weight, in pounds, instead of  mass as a fundamental quantity
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 12
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 38

chapter1 - CollegePhysics Chapter1 Introduction...

This preview shows document pages 1 - 12. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online