Physics terms

3. point temperature at which substance changes from solid to liquid state.
5. distance between corresponding points on two successive waves.
7. material through which the flow of electrical charge carriers or heat is greatly reduced.
8. basic building block of protons, neutrons, other baryons, and mesons.
12. energy of object due to its motion.
15. ability of object to original shape after deforming forces are removed.
17. particles those particles( i.e. quarks and leptons) of which all materials are composed.
19. product of force and time interval over which it acts.
21. number of occurrences per unit time.
22. something that produces a change in motion, a push or a pull.
23. either a proton or a neutron.

1. subatomic particle with positive charge that is nucleus of hydrogen atom.
2. state of matter in which atoms are separated into electrons and positive ions or bare nuclei.
4. When the net force on something is zero Mathematically, Σ F = 0
6. machines using fluids to transmit energy.
9. distance from the focal point to the center of a lens or vertex of a mirror.
10. in vacuum, 2.9979458 * 10^8 m/s.
11. change from liquid to vapor state.
13. subatomic particle of small mass and negative charge found in every atom.
14. electromagnetic waves that carry energy.
16. materials through which charged particles move readily; or heat flow readily.
18. energy sum of potential and kinetic energy.
20. property of objects to resist changes in rest or motion.
21. force opposing relative motion of two objects are in contact.