Calculate the stress in a tight wire of a material whose Young's modulus is `19.6xx10^(11)("dyne")/(cm^2)` so that the speed of the longitudinal waves is 10 times the speed of transverse waves.

Explanation

To solve the problem, we need to calculate the stress in a tight wire given that the speed of longitudinal waves is 10 times the speed of transverse waves. We will use the relationship between wave speeds, Young's modulus, and stress.

### Step-by-Step Solution:

1. **Understand the relationship between wave speeds**:
- The speed of transverse waves \( C_1 \) in a wire is given by:
\[
C_1 = \sqrt{\frac{T}{m}} = \sqrt{\frac{T}{A \cdot D}}
...