This week – Ch. 14 – Waves
Next week – Ch. 8 – Gravity
Homework due 11/26, 5 pm (both
chapters)
No labs or quiz or recitation next week
Quiz this week – Oscillations
Today --
Interpreting wave equation
Standing Waves
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Interpreting Wave Equation, Standing Waves - Lecture Slides | PHYS 121, Study notes of Physics
Material Type: Notes; Class: General Physics I; Subject: Physics; University: New Mexico Institute of Mining and Technology; Term: Fall 2008;
Typology: Study notes
Pre 2010
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This week – Ch. 14 – Waves
Next week – Ch. 8 – Gravity
Homework due 11/26, 5 pm (both
chapters)
No labs or quiz or recitation next week
Quiz this week – Oscillations
Today --
Interpreting wave equation
Standing Waves
Wave Properties
Wavelength
Wave number
Frequency
Angular Frequency
Period
Speed
m k=
m − 1 f Hz cycles/sec s − 1 rad/sec http://phet.colorado.edu/simulations/sims.php?sim=Wave_on_a_Strin g
T=
f
s v=f =
k m/s
Formulae for sinusoidal waves
y=A cosk x± t y=A cos 2 x± 2 T t
A wave on a string is moving to the right. This graph of y ( x, t ) versus coordinate x for a specific time t shows the shape of the wave at that time. What are the velocity and acceleration of a particle at point P on the string? A. velocity is upward and acceleration is zero B. velocity is downward and acceleration is zero C. velocity is zero and acceleration is upward D. velocity is zero and acceleration is downward E. none of the above
Standing Waves
clamped ends y=2A sin kxsin t free end L FIX =m / 2 L free = 4 m 2