Question

1. A cord has two sections with linear densities of 0.15 kg/m and 0.25 kg/m. You create a wave on the first lighter part of the cord with a functional form of D = (0.040 m) sin(6.0x − 9.0t), where x is in meters and t is in seconds.

   1. (a) What is the wavelength in the lighter section of the cord?

   2. (b) What is the tension in the cord?

   3. (c) What is the wavelength when the wave travels in the heavier section?

   4. (d) When the wave hits the transition point between part 1 and part 2, is there a reflected wave? If so, is the reflected wave inverted or not?

Answer 1