Concept explainers
Doorway diffraction. Diffraction occurs for all types of waves, including soundwaves. Suppose sound of frequency 1250 Hz leaves a room through a 1.00-m-wide doorway. At which angles relative to the centerline perpendicular to the doorway will someone outside the room hear no sound? Use 344 m/s for the speed of sound in air and assume that the source and listener are both far enough from the door.vay for Fraunhofer diffraction to apply. You can ignore effects of reflections.
Want to see the full answer?
Check out a sample textbook solutionChapter 26 Solutions
College Physics (10th Edition)
Additional Science Textbook Solutions
Applied Physics (11th Edition)
Essential University Physics: Volume 2 (3rd Edition)
Physics for Scientists and Engineers with Modern Physics
The Cosmic Perspective
Conceptual Physical Science (6th Edition)
Essential University Physics: Volume 1 (3rd Edition)
- A riverside warehouse has several small doors facing the river. Two of these doors are open as shown in Figure P27.17. The walls of the warehouse are lined with sound-absorbing material. Two people stand at a distance L = 150 in from the wall with the open doors. Person A stands along a line passing through the midpoint between the open doors, and person B stands a distance y = 20 m to his side. A boat o the river sounds its horn. To person A, the sound is loud and clear. To person B, the sound is barely audible. The principal wavelength of the sound waves is 5.00 m. Assuming person B is at the position of the first minimum, determine the distance d between the doors, center to center.arrow_forward(a) Find the size of the smallest detail observable in human tissue with 20.0-MHz ultrasound. (b) Is its effective penetration depth great enough to examine the entire eye (about 3.00 cm is needed)? (c) What is the wavelength of such ultrasound in 0°C air?arrow_forwardWhat is the necessary condition on the path length difference between two waves that interfere (a) constructively and (b) destructively?arrow_forward
- At a temperature of 20.0o two speakers are sending sound waves of frequency 512 Hz and 2048 Hz respectively toward a door opening of width 90.0 cm. Which wave frequency experiences a greater diffraction angle upon passing through the opening? Group of answer choices a.the 512 Hz b.the 2048 Hz c.both about the samearrow_forward! Required information college a Amazon.com: Otter... https://www.sprint.c... Saved Contact Form Subm... Jak zastavit panické... The 7 Tourin Problem 11.002 - Light waves detected by human eyes Under favorable conditions, the human eye can detect light waves with intensities as low as 2.50 × 10-12 W/m². Problem 11.002.a - Average power incident on a pupil At this intensity, what is the average power incident on a pupil of diameter 8.60 mm? W Q Search Prev 1 2 of 8 Next >arrow_forwardTwo identical audio speakers connected to the same amplifier produce in-phase sound waves with a single frequency that can be varied between 340 and 575 HzHz . The speed of sound is 340 m/sm/s . You find that where you are standing, you hear minimum-intensity sound If one of the speakers is moved 39.8 cmcm toward you, the sound you hear has maximum intensity. What is the frequency of the sound? Express your answer in hertz. How much closer to you from the position in part B must the speaker be moved to the next position where you hear maximum intensity? Express your answer in meters.arrow_forward
- Yellow sodium light has a wavelength in air of 590 nm. What is the frequency in air? (n = 1.00.) What is the wavelength in glycerine (n = 1.47)? C = 3.0 × 108 m/s)arrow_forwardYellow sodium light has a wavelength in air of 589.3 nm. What is the frequency in air? (n = 1.00.) What is the wavelength in water? (n = 1.33).(C = 3.0 × 108 m/s)arrow_forwardName the type of waves which are used for line of sight (LOS) communication. What is the range of their frequencies? A transmitting antenna at the top of a tower has a height of 20 m and the height of the receiving antenna is 45 m. Calculate the maximum distance between them for satisfactory communication in LOS mode. (Radius of the Earth = 6.4 × 106 m)arrow_forward
- The wavelength limits of human vision are 400 nm to 700 nm. A. Find the minimum frequency of light that human can see underwater? The speed of light in water is 1.33 times less than in the air. B. Find the maximum frequency of light that human can see underwater? The speed of light in water is 1.33 times less than in the air. C.Find the minimum wavelenght of light that human can see underwater? The speed of light in water is 1.33 times less than in the air. D. Find the maximum wavelenght of light that human can see underwater? The speed of light in water is 1.33 times less than in the air. (Item 4)arrow_forwardA music song recorded in a studio is stored as a digital sequence on a CD. The analog signal representing the music is 2 minutes long and is sampled at a frequency fs=44100s-1 . How many samples should be stored on the CD? Write the number of samples without commas or dots. Assume that the audio file is mono, or in other words, single channel.arrow_forwardTwo stereo speakers are each emitting a pure tone of 200 Hz, and the waves have the same phase as they leave each speaker. The speed of sound in the room is 330 m/s. You are standing between the speakers, 1.65m from one speaker and 4.95 from the other. What type of interference do you perceive? (first, calculate the wavelength of sound, then work out the distances to each speaker as a number of wavelengths) Answer choices, pick one: a) destructive b) partial c)none d) constructivearrow_forward
- Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningCollege PhysicsPhysicsISBN:9781938168000Author:Paul Peter Urone, Roger HinrichsPublisher:OpenStax CollegeCollege PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
- Physics for Scientists and Engineers, Technology ...PhysicsISBN:9781305116399Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning