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madeeeeee
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Homework Statement
Sally and Tim are using a closed air column to determine the speed of sound in the classroom. They hear a resonant length 51 cm from the top of the tube then another one when the water is 68 cm from the top of the tube by vibrating a 1024 Hz tuning fork over the column. What is the speed of sound in the classroom?
2. Explain how Mervin could tune a string to 512 Hz on his guitar using a 512 Hz tuning fork. [4]
3. Normal breathing has an intensity of 10 dB. The music at an average rock concert is 120 dB. How many times louder is the rock concert?
Homework Equations
v=lamda*f
The Attempt at a Solution
I don't know the first two, but is number 3) 10^10 dB?
I need help on 1 and 2