Concept explainers
CP Tsunami! On December 26, 2004, a violent earth-quake of magnitude 9.1 occurred off the coast of Sumatra. This quake triggered a huge tsunami (similar to a tidal wave) that killed more than 150,000 people. Scientists observing the wave on the open ocean measured the time between crests to be 1.0 h and the speed of the wave to be 800 km/h. Computer models of the evolution of this enormous wave showed that it bent around the continents and spread to all the oceans of the earth. When the wave reached the gaps between continents, it diffracted between them as through a slit. (a) What was the wavelength of this tsunami? (b) The distance between the southern tip of Africa and northern Antarctica is about 4500 km. while the distance between the southern end of Australia and Antarctica is about 3700 km. As an approximation, we can model this wave’s behavior by using Fraunhofer diffraction. Find the smallest angle away from the central maximum for which the waves would cancel after going through each of these continental gaps.
Want to see the full answer?
Check out a sample textbook solutionChapter 36 Solutions
UNIVERSITY PHYSICS UCI PKG
Additional Science Textbook Solutions
University Physics (14th Edition)
Conceptual Integrated Science
University Physics Volume 1
An Introduction to Thermal Physics
Tutorials in Introductory Physics
- On December 26, 2004, a great earthquake occurred off the coast of Sumatra and triggered immense waves (tsunami) that killed some 200000 people. Satellites observing these waves from space measured 800 km from one wave crest to the next and a period between waves of 1.0 hour. The speed of the waves were 800 km/h. How does the speed of the wave help you understand why the waves caused such devastation?arrow_forwardDuring a thunder storm over the summer, you want to estimate the distance in kilometers (not miles!) of a flash of lightning: you count the number of seconds between seeing the flash and hearing thunder, and then you divide by 2. 3. 4. 5. none of the abovearrow_forwardThe atmosphere of Mars is much less dense than the atmosphere of the Earth so the speed of sound on Mars is only 240 meters per second. Valles Marineris is a large canyon on Mars that at its widest part is 540 kilometers. If you were at the edge of Valles Marineris and yelled, “There’s no place like El Centro!”, how long would you have to wait to hear the echo?arrow_forward
- Lightning storm creates both lightning and thunder. You see the lightning almost immediately since light travels at 3 × 108m · s−1. After seeing the lightning, you count 5 s and then you hear the thunder. Calculate the distance to the location of the storm. Convert into kilometers.arrow_forwardYou place your ear onto a steel railroad track and hear the sound of a distant train through the rails Δt = 3.3 seconds faster than you do through the air. The speed of sound in steel is vs = 6100 m/s while in air the speed of sound is va = 343 m/s. Write an equation for the time it takes the sound to reach you through the air if the distance to the train is represented by D. Write an equation for the time it takes the sound to reach you through the steel if the distance to the train is represented by D. Use the difference in these two times to write an equation for the distance to the train. For the given information find the distance to the train in metersarrow_forwarda) You measure the speed in a metal to be 3.6x10^4 ft/min. How fast is the speed of sound in m/s (Hint: there are 3.26 feet in a meter)? b) You measure the density of air to be 4.608kg/m^3, what would it be in g/cm^3?arrow_forward
- You can estimate your distance from a lightning stroke by counting the seconds between the flash you see and the thunder you later hear. By what integer should you divide the number of seconds to get the distance in kilometers?arrow_forwardThis is possibly a different atmosphere from ours. In any case, the speed of sound is computer-generated, and is 454 m/s this time. Light travels for us instantaneously. You see a lightning flash, and 7.6 seconds later, you hear the thunderbolt. How far away was the lightning (in meters)?arrow_forwardAn ocean wave has a length of 10 meters. 5 waves pass a fixed location every 2 seconds. What is the speed of the wave?arrow_forward
- A lightning bolt is observed and the resultant thunderclap is heard 5 seconds afterwards. Assuming the speed of sound in air is 340 m/s, how far away was the lightning bolt? Your answer should be in units of m but you should only submit the number for your answer.arrow_forwardQuestion 2 If the speed of sound in air at 0 °C is 331 m/s. What will be the speed of sound in air at 50 °C? 299 m/s 142 m/s 331 m/s 360 m/s None of these. A Moving to another question will ave this response. ch 45arrow_forwardIn the open ocean, the tides are waves that have a period of 12 hours and a speed of 750km/hr. What is their wavelength?arrow_forward
- University Physics Volume 1PhysicsISBN:9781938168277Author:William Moebs, Samuel J. Ling, Jeff SannyPublisher:OpenStax - Rice UniversityCollege PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningPrinciples of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
- Physics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningPhysics for Scientists and Engineers with Modern ...PhysicsISBN:9781337553292Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningPhysics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage Learning