Chapter 5: Problem 57
\text { What.are the differences between music and noise? }
Chapter 5: Problem 57
\text { What.are the differences between music and noise? }
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Get started for freeA thunder is heard 2 s after a flash of lightning is seen. If the velocity of sound in air is \(330 \mathrm{~m} \mathrm{~s}^{-1}\), how far away from you, has lightning occurred?
What is quality of sound?
Give two practical applications of reflection of sound.
Which of the following statements is correct? (1) All vibrations produce sound. (3) Vibrations of frequency more than \(20 \mathrm{~Hz}\) only produce sound. (4) Vibrations of frequency between \(20 \mathrm{~Hz}\) and \(20,000 \mathrm{~Hz}\) only produce sound.
The order of magnitude of velocity of sound in solids, liquids and gases is \(-\left(\mathrm{V}_{\mathrm{s}}\right.\). velocity in solids, \(\mathrm{V}_{t}=\) velocity in liquids and \(\mathrm{V}_{\mathrm{g}}=\) velocity in gases \()\) (1) \(\mathrm{V}>\mathrm{V}_{t}>\mathrm{V}_{\mathrm{s}}\) (2) \(\mathrm{V}_{\mathrm{s}}>\mathrm{V}_{0}>\mathrm{V}_{1}\) (3) \(\mathrm{V}_{\mathrm{g}}<\mathrm{V}_{t}<\mathrm{V}_{\mathrm{s}}\) (4) \(\mathrm{V}=\mathrm{V}=\mathrm{V}_{t}\)
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