TIMMY KEEGAN
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Containers lab 9/6/18
Buggy Lab 9/19/18
Cart Lab 9/30/18
Newtons Second Law Lab 10/19/18
Impulse Lab
Momentum Lab
Accident Project
Wave on a String Lab
Circuit Lab
Content
Unit 0 - Patterns & measurements
Unit 1 - Kinematics
Unit 2 - Forces
Unit 3 - 2D Motion
Unit 4 - Energy
Unit 5 - Momentum and Impulse
Unit 6 - Rotational motion
Unit 7 - Simple Harmonic Motion
Unit 8 - Waves
Unit 9 - Circuits
Blog Posts
Wave Investigations
Waves
A disturbance that transfers energy through matter or space
Electromagnetic Waves
A wave that does not need a medium to travel through
Examples
Light, thermal radiation, x rays, microwaves
Mechanical Waves
A wave that needs a medium to travel through
Examples
sound, ocean waves, seismic waves
Transverse Waves
When the oscillation is perpendicular to direction of motion
Examples
Light waves, radio waves, magnetic waves
Longitudinal Waves
When the o
scillation is parallel to direction of motion
Examples
sound waves, seismic waves
https://www.difference.wiki/wp-content/uploads/2017/08/longitudinal-wave-vs-transverse-wave-770x385.jpg
Wave Speed
It depends on the medium that it travels through
It is not affected by amplitude or wave energy
Waves travel at a constant speed
https://socratic.org/questions/a-wave-along-a-guitar-string-has-a-frequency-of-440-hz-and-a-wavelength-of-1-5-m
Wave Properties
Amplitude
Maximum displacement of oscillations in a wave
Amplitude is proportional to the energy the wave carries
the greater the amplitude, the more energy
Period
Time between oscillations (s)
represented by T
Frequency
Number of oscillations in a unit of time (Hz)
Represented by f
F = 1 / T
Wavelength
Distance between waves ( λ)
Distance between crests or troughs with transverse and compressions with longitudinal
Superposition of Waves
The Doppler effect
An increase or decrease in the frequency of waves as the source or observer move toward or away from each other
It causes a sudden change in pitch
An example is a passing siren and how it sounds differently as it moves past you/comes towards you
http://iamtechnical.com/explaining-doppler-effect
Wave Interference
When waves move through each other
Constructive interference
When waves add together and the amplitudes become greater
Destructive interference
When waves cancel each other out or lessen the amplitudes
Beats
changes in amplitude when the frequencies of waves are similar
Medium Boundaries
Different boundaries for the end of waves change how the waves act
Fixed boundaries on both ends
Wave ends and flips back over the other side repeatedly
two nodes
One side with fixed boundary one open
wave flips back on the side with the fixed and ends on the open one
one node one antinode
Both sides with open ends
two antinodes
Standing Waves
Standing Waves
Waves that appear to stand still but there are actually made up of traveling waves that are reflecting and interfering with each other
Nodes
Parts of the wave that aren't moving
destructive interference
Antinodes
Areas with the greatest crests
total constructive interference
Fundamental Frequency
the lowest frequency which is produced by the oscillation of the whole of an object
Harmonics
an integer multiple of the fundamental frequency.
https://www.khanacademy.org/science/ap-physics-1/ap-mechanical-waves-and-sound/standing-waves-ap/a/standing-waves-review-ap
Speed of Standing Waves
The speed of a standing wave is affected by the linear density of the string and the force of tension
The linear density of the string is inversely proportional to the speed
the force of tension is directly proportional to the speed
https://slideplayer.com/slide/4164591/
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Home
About
Labs
Containers lab 9/6/18
Buggy Lab 9/19/18
Cart Lab 9/30/18
Newtons Second Law Lab 10/19/18
Impulse Lab
Momentum Lab
Accident Project
Wave on a String Lab
Circuit Lab
Content
Unit 0 - Patterns & measurements
Unit 1 - Kinematics
Unit 2 - Forces
Unit 3 - 2D Motion
Unit 4 - Energy
Unit 5 - Momentum and Impulse
Unit 6 - Rotational motion
Unit 7 - Simple Harmonic Motion
Unit 8 - Waves
Unit 9 - Circuits
Blog Posts