- #1
He man
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Hey, I'm new here. Many of guys probably have this same issue, but my Physics teacher always puts more than he can handle on his plate, aka he prepares more information than he has time to teach. What does that leave his students with (all 400 in the lecture)? A PDF email of the power point presentation (oh, I forgot to mention he refuses to teach with a marker or chalk) and says we are responsible to learn it ourselves. This isn't homework, its questions from his previous tests that I am practicing on my own so I can pass his class. Anyway, here it is!
Two traveling sinusoidal waves in a string are defined by the functions where y and x are in centimeters and t is seconds.
y1 = (2.20 m) sin (19.5x - 32.5t)
and
y2 = (2.20 m) sin (28.0x - 44.0t)
2. The Question
What is the phase difference between these two waves at the point x = 5.00 cm at t = 2.00 s?
What is the positive x value closest to the origin for which the two phases differ by π at t = 2.00 s? (This is where the two waves add to zero.)
I can add both equations to find a resulting equation. But I have no idea how to find the phase shift between the two. They are of different k and w values and my textbook only covers superposition of the same variables. How would I go about finding a phase shift?
Oh I forgot to mention, he is teaching out of a different textbook, so I cannot see the examples in that text since I have the one that the school requires. I believe he is using a book by Young, 11th edition (I don't have the title)
Homework Statement
Two traveling sinusoidal waves in a string are defined by the functions where y and x are in centimeters and t is seconds.
y1 = (2.20 m) sin (19.5x - 32.5t)
and
y2 = (2.20 m) sin (28.0x - 44.0t)
2. The Question
What is the phase difference between these two waves at the point x = 5.00 cm at t = 2.00 s?
What is the positive x value closest to the origin for which the two phases differ by π at t = 2.00 s? (This is where the two waves add to zero.)
The Attempt at a Solution
I can add both equations to find a resulting equation. But I have no idea how to find the phase shift between the two. They are of different k and w values and my textbook only covers superposition of the same variables. How would I go about finding a phase shift?
Oh I forgot to mention, he is teaching out of a different textbook, so I cannot see the examples in that text since I have the one that the school requires. I believe he is using a book by Young, 11th edition (I don't have the title)