# Physics 101 CH16,17,18,19

version from 2015-08-31 07:24

## Section

AmplitudeMAX distance from equalibrium
AntinodePosition of MAX movement from equilibrium in a standing wave
Cycle. May start _1 complete repition of a wave cycle. - ANYWHERE
DiffractionSpreading of waves passing through an opening or around a barrier
DisplacementThe amt of movement from equilibrium
Frequency (symbols)(f) (Hz) (S^-1) - Amt of FULL cycles of a periodic motion in 1 second
Fundamental frequency - _ times the length of the whole waveLowest resonant frequency for an oscillating system. - DOUBLE
NodeArea of LEAST movement in a standing wave
Second Harmonic - has _ times the length of a waveTwice the frequencies of a fundamental frequncy - ONE
Harmonic FrequencyFrequency the is a whole # multiple of he fundamental frequency
SuperpositionMeeting of two or more waves in a specific space
OscilattionVibration about an equilibrium position or shape
Periodic wavesAll pulses have SAME shape and size. repeats over 1 wavelength and 1 period
ResoinanceLarge increase in amplitude of a vibration when a force is applied at a natural frequencyof a medium or object
Spring constant - Measured in _Amt of force needed to stretch a spring 1 unit - Newtons/meter
Standing WaveInterference pattern caused by two waves of EQUAL frequency and amplitude. Travels in opposite directions
Transverse waveWave caused by UP and DOWN motion (perpendicular to motion)
Longitudinal waveVibrations are PARALLEL to movement of of the wave
WaveMovement of ENERGY through matter
Wave length - (Symbols)Diatance from one crest to the next - (ʎ)
Sound is a _ waveLONGITUDINAL
Sound determined by _ and _TEMP - Material
Pendulum determined by _Length of string
Spring determind by _Mass of object
The distance between nodes is _ the wavelength 1/2
Harmonics are found in _ number multiples of the _WHOLE - Fundamental Frequency
The smaller trhe wave the _ the frequencyHIGHER
Longitudinal waves are measured in _ rather than _Length - Amplitude
Beats are _ variations in volumePeriodic
Doppler effectA shift of a sound waves frequency due to proximity to the source
The frequencies of sound waves move in a _ pattern. As you move in other angles to them they become _ or _longitudinal - Louder or softer
Ears are sensitive to _ and NOT to _Frequency - wavelength
T or F. The doppler ecceft relates ONLY to sound. ExFalse. - Doppler telescope (red light means the universe is expanding AWAY from us!!!!!)
BeatVariations in amplitude due to superposition of waves the have the SAME frequency.
Beats have a difference in _ that is _ to the difference in the 2 frequenciesfrequencies - EQUAL
Doppler effectThe phemominun in wherin a waves frequency seems to change due to movement of the listener or the source
Shock waveA come shaped wave produced by an object moving FASTER than the speed of sound
Sonic boomThe auditory vibration given off by a superimposed wave caused by a shockwave
Sonic booms occur _ as long as an object keeps moving FASTER than the speedo of soundCONTINOUSLY
Insturments have a different timbrre because of their distinct _ patternsresonance
InertiaResistance of an object to change its speed and direction