# Week 9 (LO7 or 8) Featured

Summary: Applying concepts of beats and pre-existing knowledge about sound waves to solve a problem about instruments in a powerpoint format.
https://www.slideshare.net/secret/z8VVDVEWPskcHO

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Summary: A Powerpoint presentation describing the fundamental concepts of beats – What is a beat? How does it work? What is the equation for a beat? How does one calculate beat frequencies? Three practice problems are included.
https://www.slideshare.net/secret/2jIWUC65Bj3bHn

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Title: 2D Wave Interference from Speakers

Category: 2D Wave Interference

Summary: A powerpoint explaining what interference is, the types of interference and when they occur between waves. and path difference between 2 sources, with practice questions and solutions on solving for wavelength and distance between sources.
https://www.slideshare.net/secret/LhbGzqU3IsaBoM

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Title: Interference of 2-D Waves and Beats

Category: 2D Wave Interference

Summary: I looked at the interference of 2D waves as well as the topic of beats since they are 2 sources interfering with one another. I chose to present my LO on a Prezzi because I think it would explain this topic best, and I decided to use one big question (2 speakers as sources) to explain the interference of 2D waves, how waves could interfere constructively or destructively. For beats, I showed the equations, explained them, and gave a simple example of how to calculate beat frequency.

http://prezi.com/nf3co8eq__bj/?utm_campaign=share&utm_medium=copy&rc=ex0share

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Title: Wave Propagation and applying Huygens’ Principle

Category: Wave Propagation and Huygens Principle

Summary: This power point LO will introduction wave propagations and explain the ideas behind Huygens’ Principle as well as the step by step tutorials on how to apply it.
https://www.slideshare.net/secret/B9JFcnrFi12xD2

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Summary: The concept of constructive and destructive interference occurring between two sound waves with varying frequencies producing beats is explained. Practice problems including both multiple choice and longer problems are used to explain this topic. This learning object is presented through a PowerPoint.

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Title: Beats

Category: Beats

Summary: This learning object discusses the physics behind beats. Examples of questions involving beats are provided as well as images and an animation to help explain concepts.

http://prezi.com/5lea9u4kakru/?utm_campaign=share&utm_medium=copy&rc=ex0share

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Summary: Physics 101 UBC LO 7-8 on beats. Made using powerpoint.

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Title: Huygens’ Principle

Category: Wave Propagation and Huygens Principle

Summary: This powerpoint explains Huygens’ Principle through an example of circular wave with a multiple choice practice problem in the end involving diffraction.

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Summary: This LO addresses the concept of beats; presented using Prezi, it includes a detailed explanation, accompanied with a question, about beating frequencies.

http://prezi.com/kwn4rfzvar4p/?utm_campaign=share&utm_medium=copy&rc=ex0share

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# Week 8 (LO6) Featured

Title: Standing Waves on Violin Strings

Category: Standing Waves on a String

Summary: Apply concepts of standing waves to find out the linear mass density and tension of a violin in power point format.

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Title: Pitch and Range in Wind Instruments

Category: Standing Waves and Music

Summary: This slideshow explains why different wind instruments have the different fundamental frequencies and the musical ranges that they have in terms of the type of air column that makes up each instrument, and how standing waves are created within the instrument.

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Title: Standing Waves on a String

Category: Standing Waves on a String

Summary: Summary of the concepts of standing waves on a string with three examples on calculating frequency, period, wavelength, and wave speed. Solutions are included.

http://prezi.com/h2csk6nje1a0/?utm_campaign=share&utm_medium=copy&rc=ex0share

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Title: Investigation of Standing Waves on a String

Category: Standing Waves on a String

Summary: This LO explores the concept of standing waves on a string. A connection between harmonic number m and wavelength, frequency is built. Powerpoint is used to deliver 2 multiple choice questions and 1 multi-part question.
http://www.slideshare.net/joycez14/physics-lo-investigation-of-standing-waves-on-strings

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Title: Standing Waves

Category: Standing Waves

Summary: This LO introduces the idea of standing waves, by comparing it to the normal traveling waves learnt earlier in the course, along with some drawn graphs to illustrate how a standing wave is formed.

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# Week 7 (LO5) Featured

Title: Reflection and Transmission of Waves

Category: Reflection and Transmission of Mechanical Waves

Summary: This learning object discusses the concepts behind the reflection and transmission of waves, and includes a brief explanation of ultrasound imaging. The aim of this LO is to provide insight not only into when a wave is inverted upon reflection, but why a wave is or is not inverted upon reflection.

Correction:
At 2:40 in the video, I said that the amplitudes of transmitted and reflected waves add up to equal the amplitude of the incident wave. I meant that the energies of transmitted and reflected waves add up to equal the energy of the incident wave.  It is energy that is conserved, not amplitude.

http://www.screencast.com/t/obLSyTJOk8c

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Title: Doppler Effect LO5 Vivian Tsang

Category: Doppler Effect

Summary: A re-submission of my LO 5 with corrected edits for better publication. Doppler effect talked about via powerpoint format.

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Title: Superposition of Waves – Basics

Category: Superposition of waves

Summary: This slideshow outlines how and why superposition of waves occurs.

http://www.powtoon.com/show/ewPvR9ADZMg/infoslides

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LO2 Title: Hard and Soft Reflections

Category: Reflection and Transmission of Mechanical Waves

Summary: In this Learning Object, I will walk you through the key points in hard and soft reflection of mechanical waves using examples from the Phet “Reflection of Waves” simulation.
There are two youtube videos which I uploaded to youtube. The videos are taken from the Phet simulation Reflection of Waves. The format is slideshare and youtube.

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Title: The Doppler Effect

Category: Doppler Effect

Summary: This slideshow is about the Doppler Effect and how to use the equation. It complements the information in the textbook (ch 15-7)

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# Week 6 (LO4) Featured

Summary: A powerpoint presentation demonstrating two problems with solutions that explore applications of power and intensity in real life. It provides steps on how to derive equations to solve questions.

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Summary: This powerpoint presentation looks at some properties of sound waves and explains the relationship between displacement and pressure of sound waves with a practice problem at the end.

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Title: Power and Intensity: Talking

Category: Power and Intensity

Summary: Find out the power required to talk over a movie.

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Title: Sound waves

Category: Sound Waves

Summary: For my learning object, I focused on the basic background of Sound waves as I wasn’t very familiar with it to begin with and was intrigued on how our ear accepts the sound waves. Relating it to simple things such as playground toys and air hockey made the concepts easier to remember. Also, discussed are the equations of sound waves and speed and the mediums it travels through.

http://prezi.com/tavi9hkb_ucl/?utm_campaign=share&utm_medium=copy&rc=ex0share

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Title: Displacement and Pressure

Category: Sound Waves

Summary: This LO will focus on a comparison between displacement and change in pressure in sound waves. It is a screen recording of a presentation along with some helpful tips through narration. I enjoyed making it, and I hope it can help clear things up if anyone is confused. Enjoy!

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# Week 5 (LO3) Featured

Summary: Use the wave speed relationship equations in harmonic waves and apply it to find the frequency of whale calls in a power point word problem.

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Title: Harmonic Waves

Category: Harmonic Waves

Summary: A PowerPoint summary of the properties of harmonic waves as well as the major equations involved in a 2D and 3D plot. A multiple choice question and word problem show how the equations are applied to harmonic waves.

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Title: Investigation of Phase and Phase Difference

Category: Phase and Phase Difference

Summary: This learning object investigates the concept of phase and phase difference. Two new formulas related to position difference and wavelength are derived. Prezi is used to deliver the whole presentation, which includes basic concept and a multi-part word problem with detailed solution.

http://prezi.com/efsqj-r-uo6l/?utm_campaign=share&utm_medium=copy&rc=ex0share

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Title: Position and Time Plots

Category: Position Time Plots

Summary: In this learning object I focused on extracting wave characteristics such as amplitude, wavelength, and frequency from position and time plots.This learning object also illustrates how to use these variables in relationships we know to find wave speed and angular frequency.

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Title: Identifying Phase and Phase Difference

Category: Phase and Phase Difference

Summary: After doing this week’s pre-reading assignment and tutorial, me and my friends were confused about what exactly phase was. This LO addresses the concepts of phase and phase difference through a PowerPoint presentation.

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# Week 4 (LO2) Featured

Title: Damped Oscillations

Category: Damped Oscillations

Summary: My learning object gives an overview of what damping is and the equations for damped oscillations. It breaks the equation down into parts and then there is a sample question and a solution at the end. I chose to make a powerpoint for my LO.

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Title: The Simple Pendulum

Category: Simple Pendulum

Summary: Overview of the basics of a simple pendulum. Explores relations between mass, length of string, period, and energy. Some problems and solutions to these problems are provided at the end of the document to confirm your understandings.

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Title: The Simple Pendulum

Category: Simple Pendulum

Summary: This Learning Object addresses two questions that have been found on a physics midterm. The first one explains the concept of velocity in the simple pendulum The second looks at the law of conservation of energy associated with the simple pendulum. I chose to use Prezzi for this Learning Object to show diagrams and calculations in a simple orderly manner.

http://prezi.com/0mhwulv2ir-r/?utm_campaign=share&utm_medium=copy&rc=ex0share

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Summary: This learning object provide detailed information and explanation on how to deal with a simple pendulum in different uniform acceleration.

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Title: The Not so Simple, Simple Pendulum

Category: Kinematics of SHM

Summary: I created a demo to show how the mass of a pendulum’s bob has no effect on its period.

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# Week 3 (LO1) Featured

Title: The Curious Case of Benjamin the Spring

Category: Horizontal Mass Spring Systems

Summary: I chose to focus on the kinematics of simple harmonic motion and presented my view on the subject in the form of a problem and thorough solution, with a greater focus on understanding the concepts behind SHM, rather than the complexity of the problem.

http://prezi.com/d6o-h4q11n_j/?utm_campaign=share&utm_medium=copy

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Title: Horizontal Mass Spring Question with Explanation

Category: Horizontal Mass Spring Systems

Summary: I created a written horizontal mass spring questions and explained the theory behind it as well as how to derive the formulas necessary to solve the question

https://prezi.com/jzg-lhyr_3dw/lo-for-physics-101/

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Title: Energy in Simple Harmonic Motion

Category: Energy in SHM

Summary: This Learning Object focuses on the law of conservation of energy in simple harmonic oscillators (e.g. mass-spring systems). It contains a series of multiple choice questions that focus on the concept that the total energy of the system is constant and is equal to the sum of the system’s kinetic energy and potential energy.

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Title: The Secret of Taipei 101

Category: Horizontal Mass Spring Systems

Summary: Examining how does tuned mass damper resist the strong wind
https://www.slideshare.net/secret/4uJUwbGT2xgOKx

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Title: Hooke’s Law in Vertical Spring Systems

Category: Vertical Oscillations

Summary: I wanted to explore the effect of Hooke’s Law on spring systems affected by gravity. These systems are much more prevalent and easier to set up, as gravity is the most familiar force in our daily lives. Does Hooke’s law still apply to these vertical oscillations?

https://prezi.com/embed/xmolmqnat3gv

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