Across
- 3. something that produces a change in motion, a push or a pull.
- 4. subatomic particle with positive charge that is nucleus of hydrogen atom.
- 5. force opposing relative motion of two objects are in contact.
- 9. machines using fluids to transmit energy.
- 10. in vacuum, 2.9979458 * 10^8 m/s.
- 12. distance from the focal point to the center of a lens or vertex of a mirror.
- 14. When the net force on something is zero Mathematically, Σ F = 0
- 16. change from liquid to vapor state.
- 19. ability of object to original shape after deforming forces are removed.
- 20. product of force and time interval over which it acts.
- 21. point temperature at which substance changes from solid to liquid state.
- 22. either a proton or a neutron.
Down
- 1. basic building block of protons, neutrons, other baryons, and mesons.
- 2. materials through which charged particles move readily; or heat flow readily.
- 3. number of occurrences per unit time.
- 5. particles those particles( i.e. quarks and leptons) of which all materials are composed.
- 6. property of objects to resist changes in rest or motion.
- 7. subatomic particle of small mass and negative charge found in every atom.
- 8. energy of object due to its motion.
- 11. energy sum of potential and kinetic energy.
- 13. distance between corresponding points on two successive waves.
- 15. electromagnetic waves that carry energy.
- 17. state of matter in which atoms are separated into electrons and positive ions or bare nuclei.
- 18. material through which the flow of electrical charge carriers or heat is greatly reduced.