Question

A certain metal with atomic mass 2.2 × 10−25 kg has an interatomic bond with length 2.3 × 10−10 m and stiffness 43 N/m. What is the speed of sound in a rod made of this metal?

Answer 1

Answer:

The speed of sound in a rod made of the material is 3215.52 m/s.

Explanation:

The speed of sound can be found using the formula:  

$V=\sqrt{\frac{s}{m}}*d$

Where s is the stiffness, m the atomic mass and d is the length of the interatomic bond.  

You just have to correctly replace these values in the formula above.

$V=\sqrt{\frac{43N/m}{2.2 * Exp-25 kg}}*(2.3 * Exp-10 m)$

V= 3215.52 m/s