PHYS 1111 Mechanics Waves Thermodynamics q Corequisite MATH 1113 also familiarity with college Algebra Geometry Trigonometry and Basic Chemistry q Not available for students with credit in PHYS 1211 q Introduction to Newtonian mechanics wave motion and thermodynamics q Aims of course teach you the fundamental principles laws of physics teach you how to apply these principles to practical problem solving useful in other fields Physics is Science The Scientific Method was and is applied in the formulation of physics What is the Scientific Method 1 Observation description of natural phenomenon 2 Formulate hypothesis to explain phenomenon 3 Use hypothesis to predict other related phenomena 4 Perform experiment observation to test hypothesis 5 Repeat 3 and 4 many times 6 If step 4 is all correct then the hypothesis 2 may be regarded as a law or theory of nature 7 If 4 is incorrect start over at 2 What is Physics Definition the science that deals with matter and energy in terms of motion and force Operational definition given some experimental observation a theory is developed to describe it The theory is then used to make predictions which are then tested with further experiments or observations A Building Up of Principles Algebra geometry trigonometry kinematics forces work energy waves thermodynamics electricity magnetism optics Some examples table tennis London 2012 Olympics Freestyle London 2012 Olympics The Classification of Physics Classical Physics everyday speeds and sizes Newton Quantum Physics very small Schroedinger Relativistic Physics Very fast Einstein Relativistic Quantum Physics very small and very fast Dirac Quantum Electrodynamics Quantum Chromodynamics Supersymmetry String theory etc Chapter 1 The Basics Things you should already know or will need to learn about 1 Units SI will be used mostly British units will be used occasionally foot pound 2 Significant figures covered in lab 3 Dimensional analysis 4 Order of magnitude estimates Vectors and Scalars more in Chap 3 Physical Quantities 1 Scalar a quantity that can be completely specified by a single number or magnitude and units e g temperature mass speed 70 mph energy 2 Vector a quantity which has both a magnitude and a direction and units e g force velocity N displacement v 70 mph Physical quantities have explicit definitions 5 E v 70 mph 5 N of E
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