Since both sound waves travel the same round-trip distance, speed is inversely proportional to time. Taking the ratio of time taken gives the speed ratio of air to water as 1:4.5 or 2:9. Class 9 Science Exploration Chapter 10 Important Questions ...
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Wave A completes one cycle in 2.5 cm, giving 13,800 Hz frequency. Wave B completes one cycle in 5.0 cm, giving a frequency of 6900 Hz at 345 m s⁻¹. Class 9 Science Exploration New Book All Chapter Solution Revise, Reflect, ...
The 8 cm span covers two consecutive wavelengths, giving a wavelength of 4 cm or 0.04 m. Dividing the speed of 340 m s⁻¹ by 0.04 m yields 8500 Hz. Chapter 10 Sound Waves Characteristics and Applications Solutions Sound Waves Characteristics ...
Sound takes 5.0 seconds at 22 °C and approximately 5.196 seconds at 0 °C to cover 1720 meters. Subtracting these values reveals an extra transit time of roughly 0.20 seconds. CBSE Class 9 Science Chapter 10 Sound Waves Characteristics and Applications ...
The total round-trip distance is 2.4 meters. Dividing this distance by the speed of 345 meters per second gives approximately 0.00696 seconds or nearly 6.96 milliseconds, for the wave to return. Class 9 Science Chapter 10 Sound Waves Characteristics and Applications ...