Get started today!

Good to have you back!
If you've signed in to StudyBlue with Facebook in the past, please do that again.

- StudyBlue
- Kansas
- University of Kansas
- Physics
- Physics 114
- Ammar
- Lecture Notes - Physics 114 - 11/7

Anonymous

Advertisement

Lecture Notes November 7th Waves Traveling Wave y(x,t)=y(x,0)=Asin(2?/?)x=Asinkx where k=2?/? aka wave number Dashed curve shows wave after time t elapsed On dashed curve, point 1 at x used to be at point 2 at (x±vt) Y(x,t)=Y(x-vt,0) Y(x,t)=Asink(x-vt) Any function of x-vt is a traveling wave with velocity v. Asink(x-vt)=Asin(kx-kvt) remember-(kv=?) => y(x,t)=Asin(kx-?t) V=?/k kv=(2?/?)v remember: ?f=v => v/?=f => kv=2?f=? Reflection of a Transmission When light hits pane of glass, some is reflected, some passes through Interference When two waves interact, simply add their amplitudes to find the resulting wave Constructive Interference Adding the two waves above yields the wave to the right. Destructive Interference Adding these two waves yields a straight line (every point cancels out) Example Constructive interference if L=n? Destructive interference if L=(n+1/2)? Standing Waves L=?/2 L=2?/2 => L=n?/2 Plucked Violin String Fundamental aka 1st Harmonic: 2nd Harmonic aka 1st Overtone: L=n(?n/2) ?n=2L/n=?1/n Recall: v=?(FT/(m/l)) Recall ?f=v?f=v/? fn=v/?=nv/?=nf1 fn=f1*n f1=v/?1 Y1=Asin(kx-?t) Y2=Asin(kx+?t) Y1+Y2=Asin kx cos ?t Recall: sin ?1 + sin ?2 = 2sin(?1+?2/2)Cos(?1-?2/2) Y1+Y2=B(x) cos ?t which is SHM B(x) equals 2Asinkx This is SHM with a variable amplitude given by B(x)

Advertisement

Want to see the other 6 page(s) in Lecture Notes - Physics 114 - 11/7?
JOIN TODAY FOR FREE!

"StudyBlue is great for studying. I love the study guides, flashcards and quizzes. So extremely helpful for all of my classes!"

Alice , Arizona State University"I'm a student using StudyBlue, and I can 100% say that it helps me so much. Study materials for almost every subject in school are available in StudyBlue. It is so helpful for my education!"

Tim , University of Florida"StudyBlue provides way more features than other studying apps, and thus allows me to learn very quickly!Â I actually feel much more comfortable taking my exams after I study with this app. It's amazing!"

Jennifer , Rutgers University"I love flashcards but carrying around physical flashcards is cumbersome and simply outdated. StudyBlue is exactly what I was looking for!"

Justin , LSU
StudyBlue is not sponsored or endorsed by any college, university, or instructor.

© 2015 StudyBlue Inc. All rights reserved.

© 2015 StudyBlue Inc. All rights reserved.