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# Summary

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by

## Cayla Halloran

on 4 June 2014

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#### Transcript of Summary

Physics Final Presentation
June 4, 2014
Fluid Mechanics & Vibrations and Waves
Buoyancy

Waves
Summary
Medium
: a physical environment through which a disturbance can travel
Crest
: the highest point above the equilibrium position
Trough
: the lowest point below the equilibrium position
Wavelength
: the distance between two adjacent similar points of a wave, such as from crest to crest or from trough to trough
Amplitude
: the maximum displacement from equilibrium
Chapter 11: Vibrations and Waves
Properties of Waves
Fluid
: a nonsolid state of matter in which the atoms or molecules are free to move past each other, as in a gas or a liquid.
Or also: objects that have the ability to flow and to alter their shape in the process.
Fluid exerts an upward force on objects that are in water.

Buoyancy Force
: the upward force exerted by a liquid on an object immersed in or floating on the liquid.
"Buoyancy force can keep objects afloat."

Chapter 8: Fluid Mechanics

Buoyancy Force
Coke vs Diet Coke
Testing the buoyancy force
Buoyancy force acts in the direction opposite of gravity

Can vs a brick
Buoyancy force is not strong enough to keep the brick afloat but its
apparent weight
is less then its actual weight.
Easier to lift someone if both standing in water

Experiment
Observe the
pulse
wave from the rope.
If the "pulses" were to continue then it becomes a
periodic wave.
Experiment
Buoyancy: keeps objects afloat
acts against the force of gravity

Waves: the properties
Pulse wave vs Periodic Wave
Serway, Raymond A., and Jerry S. Faughn. Holt McDougal Physics. Orlando, FL: Holt McDougal, 2012. Print.
Bibliography
Archimedes' Principle
: an upward buoyant force equal in magnitude to the weight of the fluid displaced by the object
describes the magnitude of a buoyant force

Chapter 8: Fluid Mechanics

Buoyancy Force

by,
Cayla Halloran

Questions?