Physics Terms -2

2. The continuous random motion of solid microscopic particles when suspended in a fluid medium due to the consequence of ongoing bombardment by atoms and molecules.
4. The nucleus of a helium atom (two protons and two neutrons) emitted as radiation from a decaying heavy nucleus.
6. The electric current that changes its direction periodically.
9. The central, positively charged, dense portion of an atom.
10. A unit of pressure, equal to 105 Pascals.
11. For a given mass of a gas at constant pressure, the volume is directly proportional to the temperature.
13. The radial force required to keep an object moving in a circular path; it is equal to mv2/r.
15. The product of mass and velocity of a body.
17. The combination of two lighter nuclei to form a heavier nucleus with an accompanying release of energy.
18. The transfer of heat by increased kinetic energy moving from molecule to molecule.
19. The strong force that exists between the nucleons.
20. Unit of power of a lens.

1. The bending of light around the corners of an object.
3. Electrical device used to store charge and energy in the electrical field.
4. The science of the production, transmission and effects of sound.
5. The splitting a heavy nucleus into more stable, lighter nuclei with an accompanying release of energy.
7. Matter that has the ability to flow.
8. The number of oscillations completed in 1 second by an oscillating body.
11. The transfer of heat by the actual transfer of matter.
12. The time during which half the number of atoms in the element disintegrate.
14. For a given mass of a gas at constant temperature, the volume of the gas is inversely proportional to the pressure.
16. A collective name for protons and neutrons.