Mechanical waves

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Across
  1. 3. overlapping and combining
  2. 7. vibration perpendicular to energy direction
  3. 9. of waves around obstacles
  4. 10. distance between two successive points on a wave
Down
  1. 1. vibration parallel to energy direction
  2. 2. time for one complete wave cycle
  3. 4. speed at which a wave travels
  4. 5. wave from interference
  5. 6. number of complete waves passing a point per second
  6. 8. maximum displacement from rest position