When heard independently, two sound wave...

When heard independently, two sound waves produce sensation of 60 db and 55 db respectively. How much will the sensation be if those are sounded together, perfectly in phase?

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CHETANA PUBLICATION-SOUND-EXERCISE

Explain the terms Pitch and Timbre.
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Explain the term loudness. Give its unit and formula in decibel.
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When heard independently, two sound waves produce sensation of 60 db a...
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Define Doppler effect for sound waves?
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What is essential for obtaining Doppler effect for sound waves?
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What is the major difference between Doppler effect of sound and light...
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What is the effect of wind on Doppler shift of sound waves? Does veloc...
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Under which three conditions the changes in frequency can be studied u...
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State common properties between Doppler effect of sound and light.
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Under which conditions of motion between source and observer, Doppler ...
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Derive an expression for apparent frequency when source is moving and ...
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Derive an expression for apparent frequency when listener approaches a...
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Write an expression for apparent frequency when both source and listen...
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State the expression for apparent frequency : i. when source of sou...
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State the expression for apparent frequency : i. when source of soun...
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State the expression for apparent frequency : i. when source is stat...
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State the expression for apparent frequency : i. when source is stat...
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A rocket is moving at a speed of 220m//s towards a stationary target. ...
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A bat,flying at velocity VB = 12.5 m//s,isfollowed by a car running at...
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A police car travels towards a stationary observer at a speed of 15 m/...
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