In a liquid with a density of 1500 kgm3 longitudinal waves, Ask an Expert

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In a liquid with a density of 1500 kg/m^³ , longitudinal waves with a frequency of 420 hz are found to have a wavelength of 8.50m . Calculate the bulk modulus of the liquid. 2) A metal bar with a length of 1.60 m has a density of 6200 kg/m^3. Longitudinal sound waves travel from one end of the bar to the other in a time interval of 3.60×10^?4 s . What is Young's modulus for this metal? I already tried several times but i can't find the right answer for both of them...

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