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Across
  1. 3. Measure of disorder
  2. 5. Light particle
  3. 9. Related to Isaac Newton
  4. 11. Unit of energy
  5. 15. Ionized gas
  6. 18. Balance of forces
  7. 19. Unit of force
  8. 22. Negative charge particle
  9. 23. Smallest energy unit
  10. 25. Unit of frequency
Down
  1. 1. Effect of massive object
  2. 2. Einstein's theory
  3. 4. Positive charge particle
  4. 6. Charged particle
  5. 7. Unit of pressure
  6. 8. Two or more atoms
  7. 10. Famous physicist
  8. 12. Electric property of particles
  9. 13. Unit of power
  10. 14. Simple machine with rope
  11. 16. Simple machine
  12. 17. Support for lever
  13. 20. Neutral charge particle
  14. 21. Basic unit of matter
  15. 24. Rotational force