Question

Волны распространяются вдоль резинового шнура со скоростью 1.6 м/с при частоте 2 Гц. Определить разность фаз двух точек резинового шнура, расстояние между которыми 40 см.

Answer 1

ΔФ=2π*ΔX/λ; Дано все, кроме λ. Находим по формуле λ=v/υ υ-частота. 
λ=0.8. Тогда ΔФ=2π*0.4/0.8=π 

Answer 2

Calculation of Phase Difference

To determine the phase difference between two points on a rubber cord, we can use the formula:

Phase Difference = (Distance between the two points) x (Frequency) x (Time Period)

Given: - Speed of wave propagation: 1.6 m/s - Frequency: 2 Hz - Distance between the two points: 40 cm (or 0.4 m)

First, let's calculate the time period using the formula:

Time Period = 1 / Frequency

Time Period = 1 / 2 = 0.5 seconds

Now, we can calculate the phase difference using the formula mentioned earlier:

Phase Difference = (0.4 m) x (2 Hz) x (0.5 s) = 0.4 radians

Therefore, the phase difference between the two points on the rubber cord is 0.4 radians.