physics

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Across
  1. 4. Speed with a direction
  2. 5. Amount of matter in an object
  3. 7. Force per unit area
  4. 11. Force opposing motion between surfaces
  5. 12. Flow of electric charge
  6. 13. Opposition to current in a circuit
  7. 16. Bending of light when it changes medium
  8. 18. Electric potential difference
  9. 19. Rate at which work is done
  10. 20. Mass times velocity
Down
  1. 1. Number of wave cycles per second
  2. 2. Rate of change of velocity
  3. 3. Disturbance that transfers energy
  4. 6. Maximum displacement of a wave
  5. 8. Push or pull acting on an object
  6. 9. Resistance to change in motion
  7. 10. Force applied over a distance
  8. 12. pizza de pollo y champiñones
  9. 14. Capacity to do work
  10. 15. Attraction between objects with mass
  11. 17. Rotational equivalent of force