practice

1. Write something.
2. Write something else.
3. Write something different.
4. Write something completely different.

conceptual

1. Does the medium in which a wave travels move along with the wave itself? Describe a situation that could be used to verify your claim.
2. A freight train at rest starts moving forward. There is enough slack in the couplings between cars that, after the first car starts moving, there is a slight delay before the second car starts to move. Then, after the second car starts moving, there is a slight delay before the third car starts to move. Likewise, after the third car starts moving (keep repeating this procedure over and over again) until finally the last car starts to move. This phenomenon satisfies the definition of a wave. Is the wave I just described a …
   1. mechanical or electromagnetic wave?
   2. transverse, longitudinal, complex, or torsional wave?
   3. pulse or a periodic wave?
   4. standing or traveling wave?