Table of contents
- 0. Math Review31m
- 1. Intro to Physics Units1h 23m
- 2. 1D Motion / Kinematics3h 56m
- Vectors, Scalars, & Displacement13m
- Average Velocity32m
- Intro to Acceleration7m
- Position-Time Graphs & Velocity26m
- Conceptual Problems with Position-Time Graphs22m
- Velocity-Time Graphs & Acceleration5m
- Calculating Displacement from Velocity-Time Graphs15m
- Conceptual Problems with Velocity-Time Graphs10m
- Calculating Change in Velocity from Acceleration-Time Graphs10m
- Graphing Position, Velocity, and Acceleration Graphs11m
- Kinematics Equations37m
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- 3. Vectors2h 43m
- Review of Vectors vs. Scalars1m
- Introduction to Vectors7m
- Adding Vectors Graphically22m
- Vector Composition & Decomposition11m
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- Trig Review24m
- Unit Vectors15m
- Introduction to Dot Product (Scalar Product)12m
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- 4. 2D Kinematics1h 42m
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- 14. Torque & Rotational Dynamics2h 5m
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- Toroidal Solenoids aka Toroids12m
- Biot-Savart Law (Calculus)18m
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- 30. Induction and Inductance3h 37m
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- Phasors20m
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- Impedance in AC Circuits18m
- Series LRC Circuits11m
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- Power in AC Circuits5m
- 32. Electromagnetic Waves2h 14m
- 33. Geometric Optics2h 57m
- 34. Wave Optics1h 15m
- 35. Special Relativity2h 10m
18. Waves & Sound
Wave Intensity
5:58 minutesProblem 15.17b
Textbook Question
Textbook Question(II) What is the ratio of
(b) the amplitudes, of an earthquake P wave passing through the Earth and detected at two points 15 km and 55 km from the source?
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