(many thanks to the HyperPhysics website)
Conservation of Energy Principle
in action. In either case, when the object changes direction it momentarily 'stops' and the total energy resides in
Potential Energy.
As the object speeds up in it's swing or oscillation there is a point at which it is moving as fast as it will move, at this point the total energy resides in
Kinetic Energy.
Total Energy = Potential Energy + Kinetic Energy
1) Explain Resonance
Frequency using two examples.
2) What are the ranges of frequencies for cats, dogs and humans?
3) What are the different categories of waves---explain?
4)
What are the Harmonics of Open Air Column?
5)
How can one demonstrate harmonics using a slinky?
Unit Analysis Practice
Work them out first!
Unit
Conversions
1) How
many miles in a light year? That is, how far does light travel in a
year?
(speed of light = 186,000 miles/sec)
Answer (Thursday
night)
2) How many grams
of water are there in a cubic meter container?
(Density of Water = 1 gram/cubic centimeter)
Answer (Thursday
night)
3) You
receive a ton of gold. How much money does this represent at $312 per
ounce?
How large is this chunk of gold in cubic centimeters?
(Density of Gold = 19.6 grams/ cubic centimeter)
Answer (Thursday
night)
Knowing
Fourier
Analysis will make you smart and valuable
Fourier Analysis
is simply the decomposition of any complicated-looking
signal into its sine and cosine wave components.
It's amazing that we are actually able to re-create this signal from
basic sine waves!
Sound
Spectrograph
The Sound spectrograph
produces a "print" which shows fundamental frequency, harmonics
and intensity of the voice. This is used to identify subtle, but crucial
changes in voice quality that can then be treated. The spectrogram identifies
the presence of noise in the voice, such as tremor, pitch breaks and
abrupt starts.
An excellent primer on speech synthesis: Speech
Synthesis