Physics Study Guide: Test Preparation for Chapters 5, 6, and 7, Slides of Advanced Physics

Download Physics Study Guide: Test Preparation for Chapters 5, 6, and 7 and more Slides Advanced Physics in PDF only on Docsity! Physics docsity.com The plan:  Dates for Test  Review of yesterday  Constructive & Destructive Interference  Fixed Ends  Open ends  Waves when they meet  What makes a good surfing day  Visible spectrum  Doppler Effect  Shock Waves  Return Pendulum Lab  Speed of sound Lab soon! docsity.com Test Outline:  Chapter #6  Work  Energy  Kinetic  Elastic  Potential  Gravitational potential  Work Energy Theorem  Power and Efficiency docsity.com Test Outline:  Chapter #7:  Energy transformation  Pendulum  Spring  Conservation of energy  Conservation of momentum  Collisions  Recoil  Glancing blows docsity.com Test Format:  20-30 points for Multiple Choice  20-30 points for True & False  30-50 points for Long Answers docsity.com When waves meet: v v v v Meeting waves out of phase Meeting waves in of phase docsity.com Standing Waves: 1 2 3 4 5 6 7 8 Time Lapse View of Standing Wave docsity.com Waves and Wave Length:  The standing wave to the left represents one half of the wavelength of the wave or ½ .  This would be a complete wave cycle or 2/2  or 1 .  This would be 3/2  or 1 ½ wave. docsity.com Standing Waves  When two sets of waves of equal amplitude and wavelength pass through each other in opposite directions, it is possible to create an interference pattern that looks like a wave that is “standing still.” It is a changing interference pattern.  Demo - Rope and strobe  Demo - Mechanical overhead model docsity.com Visible Spectrum: ~«< Increasing energy WWW. \P SNS NN. Increasing wavelength ————$$_$__________—_> 0.0001 nm 0.01 nm 1O0nm 1000nm 0.01 cm lcm lm 100 m nl | 1 nl lL i Gamma rays Xrays Ultro- Infrared Radio waves violet Radar TV FM AM { -N 400 am 500 nm 600 nm 700 nm \X 7 DOPPLER EFFECT  Refers to the change in frequency when there is relative motion between an observer of waves and the source of the waves  Doppler Movie - URL docsity.com The Doppler Effect for a Moving Sound Source Red Shift: Moving Away from source Actual Visual Spectrum Observed Visual Spectrum docsity.com Blue Shift: Moving towards source Actual Visual Spectrum Observed Visual Spectrum docsity.com = —_ DAYTON ™ ain ah sticker i is yt @ ~ youre driving (oo oe docsity.com BOW WAVES  Waves in front of moving object pile up.  The familiar bow wave generated by a speedboat knifing through the water is a non-periodic wave produced by the overlapping of many periodic circular waves. It has a constant shape. docsity.com Video Demonstration:  Demo 2.1 – Waves & Wake from Phys123 docsity.com SHOCK WAVES  Just as circular waves move out from a swimming bug, spherical waves move out from a flying object. If the object flies faster than the waves, the result is a cone-shaped shock wave.  There are two booms, one from the front of the flying object and one from the back. docsity.com Video Demonstrations: docsity.com docsity.com Good Surf Days:  There are two main factors that determine how good the surf will be.  First, there are the conditions that lead to initial wave formation. These determine the quality and size of the ground swell that will hit the surf spot.  The second main factor is the local conditions at the surf spot. These have to be right to ensure the swell can create quality waves. Let's look at both of these factors in turn. docsity.com Factors which produce waves:  There are three main factors  Wind Speed - The greater the wind speed the larger the wave.  Wind Duration -The longer the wind blows the larger the wave.  Fetch - The greater the area the wind affects the larger the wave. docsity.com  Where it all begins:  Offshore storms generate winds.  The ocean would be almost completely flat without wind. docsity.com  The stronger and longer the wind blows, the more effect it has on these ripples and the larger they become. Initially the waves will just be small chop, but these will soon increase in size. docsity.com  As the wind continues to blow and the waves generated remain under the influence of the wind, the smaller waves will increase in size. The wind will get hold of the small waves much more easily than the calm sea surface.  The wave size is dependent on the wind speed generating it. A certain wind speed will only be able to generate a wave of certain size. Once the largest waves that can be generated for a given wind speed have formed, the seas are "fully formed." docsity.com When everything is right: docsity.com docsity.com Nova Scotia  Nova Scotia is quickly becoming a surf destination for surfers around the world.  Especially late August into October for hurricane season. docsity.com