CSD 313L Exam 1 Study Guide Review.docx

CSD 313L Exam 1 Study Guide Review.docx - Review of the 1st...

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Review of the 1 st section – Acoustics, CSD 313L, Hearing Science, June 17, 2019 1. Basic physics and mathematics a) Three fundamental physical quantities: * all scalar quantities - mass: is the quantity of matter present; it defines the magnitude of inertia; inertia is proportional to mass; the units are gram, kilogram, pound, ounce, etc; 1lb=454g - time: is the quantity expressed in seconds (s), minutes (min), hours (hrs), days, etc. - length: is a measure of distance (amount of special separation between two points); the units used are meter, kilometer, centimeter, foot, yard, etc. b) Major derived physical quantities: *all are vector quantities that incorporate both magnitude and direction - Displacement (d): is a change in position - Velocity (c): is the amount of displacement per unit time; or can be defined as the time rate of displacement; asks “How much displacement occurs in one second?” - Acceleration (a): is the time rate change in velocity; positive acceleration is like pushing the gas pedal to go faster whereas neg acceleration (deceleration) is like pushing the break to go slower; asks the question “In one second, how much does velocity change?” - Force (F): is a push or pull; object has mass (inertia) which opposes change in motion, so a force can be applied to overcome inertia; when we apply force on an object, it distorts the matter and/or accelerates/ decelerate the matter; force can change the velocity of the object; unit is the Newton (N) - Pressure (p): is the force applied on a unit area; unit is Pascal (Pa) c) Scalar and vector physical quantities
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  • Spring '08
  • LIU
  • Study Guide Exam 1, Sine wave

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