Waves A hiker shouts toward a vertical cliff 685m away. The echo is heard 4.00 s later. What is the speed of sound of the hiker’s voice in the air? The.

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Presentation transcript:

Waves A hiker shouts toward a vertical cliff 685m away. The echo is heard 4.00 s later. What is the speed of sound of the hiker’s voice in the air? The wavelength of the sounds is 0.750m. What is its frequency? What is the period of the wave? 2. If you want to increase the wavelength of waves in a rope, should you shake it at a higher or lower frequency? 3. What is the speed of a periodic wave disturbance that has a frequency of 2.50 Hz and a wavelength of 0.600m? 4. The speed of a transverse wave in a string is 15.0m/s. If a source produces a disturbance that has a frequency of 5.00 Hz, what is the wavelength? 5. A standing wave pattern is established in a 246-cm long rope. A snapshot of the rope at a given moment in time is shown in the diagram below. Vibrations travel within the rope at speeds of 22.7 m/s. Determine the frequency of vibration of the rope.

6. A wave is traveling in a rope 6. A wave is traveling in a rope. The diagram below represents a snapshot of the rope at a particular instant in time. Determine the number of wavelengths which is equal to the horizontal distance between points … a. … C and E on the rope. b. … C and K on the rope. c. … A and J on the rope. d. … B and F on the rope. e. … D and H on the rope. f. … E and I on the rope.

7. A wave with a frequency of 12 7. A wave with a frequency of 12.3 Hz is traveling from left to right across a rope as shown in the diagram at the right Positions A and B in the diagram are separated by a horizontal distance of 42.8 cm. Positions C and D in the diagram are separated by a vertical distance of 12.4 cm. Determine the amplitude, wavelength, period and speed of this wave.