Definitions Flashcards
What is needed for a body to remain in equilibrium?
-no net force
-no net moment
What is a black body?
A surface that absorbs all electromagnetic radiation incident upon it
What is a transverse wave?
Particle oscillations are perpendicular to wave propagation
What is a longitudinal wave?
Particle oscillations are parallel to wave propagation
What is potential difference?
The amount of energy converted from electrical to another form of energy per coulomb of charge between two points
State Ohms law
The current of a wire at constant temperature is directly proportional to the p.d across it
State the meaning of transition temperature
The temperature at which a material loses its resistance and becomes superconducting
State the principle of superposition
When two or more waves cross at a point, the displacement at that point is equal to the sum of displacements in indivdual waves
What is a hadron?
Particles consisting of quarks or anti-quarks
What is a meson?
A hadron with a quark, anti-quark pair
-Pions
What is a baryon?
A hadron with 3 quarks or anti-quarks
-Protons and neutrons
What is EMF?
The energy converted to electrical energy per coulomb of charge flowing through the source
