What is the propagation speed of blood?

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Sharpen your skills for the Davies Publishing SPI Test with targeted flashcards and multiple-choice questions, complete with hints and clarifications. Prepare thoroughly for success!

Multiple Choice

What is the propagation speed of blood?

Explanation:
Propagation speed of blood refers to how fast a sound wave travels through blood, which depends on the medium’s compressibility and density. The speed is given by v ≈ sqrt(B/ρ), where B is the bulk modulus and ρ is the density. For blood, with a density around 1060 kg/m^3 and a bulk modulus in the ballpark of a few gigapascals, the result sits around 1,500–1,600 m/s. The widely used reference value is about 1,560 m/s (1.56 km/s), so that number is the best match. The other options are farther from the typical value for a liquid like blood.

Propagation speed of blood refers to how fast a sound wave travels through blood, which depends on the medium’s compressibility and density. The speed is given by v ≈ sqrt(B/ρ), where B is the bulk modulus and ρ is the density. For blood, with a density around 1060 kg/m^3 and a bulk modulus in the ballpark of a few gigapascals, the result sits around 1,500–1,600 m/s. The widely used reference value is about 1,560 m/s (1.56 km/s), so that number is the best match. The other options are farther from the typical value for a liquid like blood.

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