{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

1082_Physics ProblemsTechnical Physics

# 1082_Physics ProblemsTechnical Physics - Chapter 38 P38.49...

This preview shows page 1. Sign up to view the full content.

Chapter 38 423 P38.49 Let the first sheet have its axis at angle θ to the original plane of polarization, and let each further sheet have its axis turned by the same angle. The first sheet passes intensity I max cos 2 θ . The second sheet passes I max cos 4 θ and the n th sheet lets through I I n max max cos . 2 0 90 θ where θ = ° 45 n . Try different integers to find cos . 2 5 45 5 0 885 × ° F H G I K J = cos . 2 6 45 6 0 902 × ° F H G I K J = . (a) So n = 6 (b) θ = ° 7 50 . P38.50 Consider vocal sound moving at 340 m/s and of frequency 3 000 Hz. Its wavelength is λ = = = v f 340 3 000 0 113 m s Hz m . . If your mouth, for horizontal dispersion, behaves similarly to a slit 6.00 cm wide, then a m sin θ λ = predicts no diffraction minima. You are a nearly isotropic source of this sound. It spreads out from you nearly equally in all directions. On the other hand, if you use a megaphone with width 60.0 cm at its wide end, then a m sin θ λ = predicts the first diffraction minimum at
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern