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Period
Any given point in space, a periodic wave repeats itself after a time
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Frequency
An inverse of a period
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Wavelength
The distance of a wave, just a period represents time
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Reflection
An abrupt boundary between one medium and another
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Refraction
Traveling in a different direction unless the incident wave's direction of propagation is along the normal a change in propagation direction
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Constructive interference
Super position of a wave that are in waves with one another
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Destructive interference
the superposition of a wave that 180 degrees of a phase
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Longitudianl wave
the motion of particles in the medium is along the same line of the propagation of the wave
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Ultrasound
sound waves above 20kHz
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Doppler effect
The frequency change, the oberserved frequency is different from the frequency transmitted by the source, when the source or the observer are in motion relative to the wave medium.
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Temperature
Thermal equilibrium, a quantity that dertermines when objects are in thermal equilibrium
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Heat
Energy in transit between two objects or systems due to temprerature difference between them
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Absolute zero
- the idea of all molecular matter coming to a complete stop. The lower limit of attainable temperature.
- 0 degrees K
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Ideal gas law
establishes a relationship between pressure, volume, the amount of gas, and absolute temperature
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Internal evergy
The total energy of all molecules in a system, except for microscopic energy
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Specific heat
The heat capacity per unit mass
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Conduction
takes place within solids, liquids and gases, due to collision between molecules and atoms in which energy is exchanged
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Convection
Involved fluids that carry heat from one place to another. Material moves unlike conduction
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Electric conductor
Materials in which some charge can move easily
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Electric insulators
Materials in which some charge cannot move easily
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Electric field
Electric force per unit charge
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Electrostatic equilibrium
No net motion of charge
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Capacitor
Device that stores potenital energy by soting seperated positive and negative charges
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Direct Current
The current on any branch always moves in the same direction
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Alernating current
Circuits in which the currents occasionally reverses the current
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Ohms law
The current is proportional to change in voltage
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Motional EMF
Induced when conductor is moved in a magnetic field
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Faradays Law
The induced emf due to changing magnetic flux, no matter what the reason for the flux change
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Transverse Wave
The motion of particles in the medium is along the same line of the propagation wave
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Electric Potential
Electric potential energy per unit charged
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