What is the formula for sound intensity measured in decibels? answer dB = 10log(I/10^-12) where I is the intensity of sound in W/m²	What is the equation for the Doppler effect? answer f' = f(C±Vd) / (C±Vs) where f' is the perceived frequency, f is the actual frequency, C is the speed of sound, Vd is the speed of the detector (+ve if going towards the source), Vs is the speed of the source (+ve if going away from detector).
What is the equation for the speed of sound in a fluid? answer v = sqrt(B/density) where B is the bulk modulus	What is the equation for the speed of sound in a solid answer v = sqrt(Y/density) where Y is the Young's modulus
How does temperature affect the speed of sound? answer v is proportional to sqrt T (measured in K).	Velocity of a wave in a taut string is proportional to? answer sqrt (tension/[mass/length])