Final answer:
The speed of the pulse traveling along the D-string of a guitar, with a linear mass density of 2.5 × 10⁻³ kg/m and under a tension of 81.1 N, is approximately 180.1 meters per second.
Step-by-step explanation:
To find the speed at which the pulse travels along the D-string of a guitar, we can use the formula for the wave speed on a string, which is v = √(T/μ), where T is the tension in the string and μ is the linear mass density of the string. Given the linear mass density of the D-string is 2.5 × 10⁻³ kg/m and the tension is 81.1 N, we can calculate the speed as follows:
v = √(T/μ)
v = √(81.1 N / (2.5 × 10⁻³ kg/m))
v = √(32440 m²/s²)
v ≈ 180.1 m/s
Therefore, the speed at which the pulse travels along the D-string is approximately 180.1 meters per second.