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Question: Bulk modulus of water is 2 × 10<sup>9</sup> Pa. Air is \_\_\_\_\_\_ times more compressible than wat...

Bulk modulus of water is 2 × 109 Pa. Air is ______ times more compressible than water.

A

200

B

2 × 103

C

2 × 105

D

2 × 104

Answer

2 × 104

Explanation

Solution

BwaterBair=CairCwater=2×1091×105=2×104\frac{B_{water}}{B_{air}} = \frac{C_{air}}{C_{water}} = \frac{2 \times 10^{9}}{1 \times 10^{5}} = 2 \times 10^{4} { C = 1/B}