Slide 1

Kuliah Mg-7Fisika GelombangSuperposition, Standing Wave& Sound WaveDosen: Dr.rer.nat. Ir. Aulia M T NasutionSuperposition of Wave

Standing Wave

Minimum values of amplitude:

Maximum values of amplitude:

nodesantinodes

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Standing Wave in String

Wavelength of the normal modes:Frequency of the normal modes:Contoh Soal 1:

f2 = 2 f1 = 2 x 262 Hz = 524 Hz f3 = 3 f1 = 3 x 262 Hz = 786 Hz

Contoh Soal 2:

Ball in air vibrates in its 2nd harmonicsBall in water vibrates in its 5th harmonicsRadius of the sphere = ????Contoh Soal 3:

Distance from neck = 64 60.3 cm = 3.7 cm

Distance from neck = 64 57.1 cm = 6.9 cmDistance from first fret = 6.9 3.7 cm = 3.2 cmStanding Waves in Air Columns

Contoh Soal - 4:

Beat (temporal interference)

using trigonometric identity:

Maximum amplitudes are happened when:

Sound Level in decibels (dB)

reference intensity

Psychological Sound Maps

Doppler Effect

Terima KasihPertanyaan ???