hw_ch28 - Ch. 28 HW Solutions 2.) (a) The speakers are two...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Ch. 28 HW Solutions 2.) (a) The speakers are two coherent sources at the same location. They emit in phase so the amplitudes are added: 2A. (b) The speakers are 90 cm apart, or half a wavelength. Along the x-axis their waves are 180 out of phase so the interference is destructive: 0A. (c) Same as part (b): 0A. (d) The speakers are now 180 cm apart along the x-axis, or one full wavelength. The inter- ference is then fully constructive so the combined amplitude is 2A. 7.) The wavelength of light is λ = 546 nm. Bright fringes occur for constructive inter- ference, Δ s = . (a) The zeroth order fringe on the screen is equidistant from the slits, so Δ s = 0 m. (b) The first order bright fringe occurs for Δ s = λ = 546 nm. (c) The second order bright fringe occurs for Δ s = 2 λ = 1092 nm. (d) The third order bright fringe occurs for Δ s = 3 λ = 1638 nm. 9.) The wavelength of light is λ = 589 nm, the slit width is d = 0 . 100 mm, and the slit-to-screen distance is h = 1 . 50 m. Recall that for
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 2

hw_ch28 - Ch. 28 HW Solutions 2.) (a) The speakers are two...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online