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Phys141 Principles of Physical Science Class Review for Chapter 1 – 4

Phys141 Principles of Physical Science Class Review for Chapter 1 – 4. Instructor: Li Ma Office: NBC 126 Phone: (713) 313-7028 Email: malx@tsu.edu Webpage: http://itscience.tsu.edu/ma Department of Computer Science & Physics Texas Southern University, Houston. Sept. 22, 2004.

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Phys141 Principles of Physical Science Class Review for Chapter 1 – 4

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  1. Phys141 Principles of Physical Science Class Review for Chapter 1 – 4 Instructor: Li Ma Office: NBC 126 Phone: (713) 313-7028 Email: malx@tsu.edu Webpage: http://itscience.tsu.edu/ma Department of Computer Science & Physics Texas Southern University, Houston Sept. 22, 2004

  2. Scientific method Process of investigating nature Experiment Observation of natural phenomena (what) Description of how the nature operates Scientific law Explanation of the behavior or regularity in nature (why) Hypothesis / Theory Chapter 1 Applications

  3. Chapter 1 – 4: Mechanics Mechanics is one branch of Physics • Research started with motion • Definition & description of motion • Introduced quantities to describe motion: • Speed • Velocity • Acceleration Chapter 2

  4. Chapter 1 – 4: Mechanics • “What causes motion?” • Force • Newton’s laws of motion • Newton’s law of gravitation • Introduced quantities to describe motion: • momentum Chapter 3

  5. Chapter 1 – 4: Mechanics • “Why force can cause motion?” • Work: force is applied, work is done • Energy: ability to do work • Power: efficiency of doing work • Conservation of energy • Conservation of mechanical energy Chapter 4

  6. Chapter 1 – 4: Mechanics • “How to measure the quantities related to motion?” • Fundamental physical quantities • Units in two different systems • Metric system • British system Chapter 1

  7. Sections covered • Chapter 1: 1.1 – 1.8 • Chapter 2: 2.1 – 2.5 • Chapter 3: 3.1 – 3.6 • Chapter 4: 4.1 – 4.4 (skip 4.5)

  8. Examples of Calculation • Example1: distance from Moon to Earth is 3.87x105km, what is it in feet, written in scientific notation • Example2: exercise 3 on page 41 • Example3: exercise 3&4 on page 66 • Example4: exercise 22 on page 88

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