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PhysicsQ&A Library1a. A speaker is playing music at 4.3 W. What is the intensity of the music if the speaker is 0.5 m away from you? 1b. What is the loudness of this speaker? Speaker A is playing a sound with double the intensity of Speaker B. How much louder is Speaker A than Speaker B? Speaker A is playing a sound with a quarter of the amplitude of Speaker B. How much louder is Speaker A than Speaker B? What is the impedance of a wave with a speed of 243m/s and a density of 3.2 kg/m3. What is the ratio of impedance when Z1 = 3.2 x 103 and Z2 = 1.45 x 102 ? 7a. The ratio of impedance of two substances is 7. What percentage of intensity is transmitted at the boundary? 7b. What percentage of intensity is reflected?Question

Asked Oct 13, 2019

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1a. A speaker is playing music at 4.3 W. What is the intensity of the music if the speaker is 0.5 m away from you?

1b. What is the loudness of this speaker?

- Speaker A is playing a sound with double the intensity of Speaker B. How much louder is Speaker A than Speaker B?

- Speaker A is playing a sound with a quarter of the amplitude of Speaker B. How much louder is Speaker A than Speaker B?

- What is the impedance of a wave with a speed of 243m/s and a density of 3.2 kg/m
^{3}.

- What is the ratio of impedance when Z1 = 3.2 x 10
^{3}and Z2 = 1.45 x 10^{2}?

7a. The ratio of impedance of two substances is 7. What percentage of intensity is transmitted at the boundary?

7b. What percentage of intensity is reflected?

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