MCAT Physics Question — Velocity of Sound
- May 29, 2018
- MCAT Question of the Day
A. Air > water > copper
B. Air > copper > water
C. Copper > water > air
D. Copper > air > water
Click for Explanation
The densities of solids are the greatest because of the strong intermolecular forces, which create lattice structures with closely bonded molecules. While solids tend to be densest, they also tend to be the least compressible, which corresponds to a high bulk’s modulus. As a result, the B/ρ quotient is the highest for solids, followed by liquids, and then gases. Therefore, the velocity of sound through copper is greater than water, which is greater than air. Thus, C is the correct answer.
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