Problem 17.4: Properties of the superposition of two waves

Please wait for the animation to completely load.

The animation shows disturbances on two identical strings (position is given in centimeters and time is given in seconds). Restart.

At t = 2.5 seconds, which of the following, if any, statement(s) is (are) true regarding the superposition of the two waves?

  1. Their sum adds up to zero.
  2. Their sum adds up to twice that of the original waves.
  3. Their sum is as if only one of the original waves is there.
  4. Their sum has a large peak, a depression, and then another large peak.