PHYS
Physics Premidterm Examination Notes

Physics Premidterm Examination Notes - Chapter1:Units,...

Info icon This preview shows pages 1–3. Sign up to view the full content.

Chapter 1: Units, Physical Quantities and Vectors Physics A branch of science which studies  matter and energy. Standards and Units Measurement   Comparison Unit Consistency and Conversion An equation must be dimensionally  consistent Always carry units through  calculations Convert to standard units as  necessary Fundamental Quantities Mass   kg Time   sec Length   meters Prefixes Deci Kilo Centi Mega Milli Deka Micro Giga Nano Tera                           Uncertainty and Significant Figures 1. Multiplication and Division      - Significant Figures 2. Addition and Subtraction      - Least Accurate Measure of two quantities Ratio Circumference and Diameter 3.14 3 significant Figures Scalar Quantities  – physical quantities  described by magnitude only. Vector Quantities  – physical quantities  characterized by both magnitude and  direction. For a magnitude to be equal it should be: Same in length Same in direction A magnitude is: A force A displacement A velocity An acceleration Vectors are: Operable Can be added and multiplied 1 } } small big
Image of page 1

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

Graphical Method 1. Tail-to-Head (Head-to-Tail) 2. Pure Horizontal Types of vectors 1. Parallel 2. Equal 3. Anti-parallel 4. Perpendicular Commutative Property Both answers are equal A + B = C B + A = C Component Vectors Vector Equation A + B = C Note:  
Image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern