1. Pressure maximum when.....????...pressure minimum when???
P max = nodes (compression), Pmin = antinodes (rarefraction)....
So the answer is ........????
2. sound wave = transverse ke longitudinal??
kalau string mesti trasnverse (up and down) so epas die transfer bunyi@sound to
air molecules ??....jawab...jawab...
3. (Doppler Effect)Train moving....so stesen ketapi moving ke???....
Jadi stesen ketapi tak bergerak (static, so v observer = 0m/s
ketapi bergerak, so ade velocity, v source = 20m/s
Dah bagi f ketapi@f source = 500Hz
Train bergerak ke stesen.....cari le kome...
Soalan tanye orang dlm train tu dengar frekuensi brape??/
4. l=100m,
open end pipe, so if fundamental l=lambda@wavelength/2
so, find f, v=f/lambda@wavelength
yang lain cari sendiri....
*sori la ye...blog ni takde symbol2 maths ngan fizik...paham2 sendiri la ye........
5. I,(Intensity) is proportional to 1/r (squared)
so buat ratio base on the equation.....
jangan silap kira (r)
6. (Doppler Effect)
nanti sambung lg review....ade keje....
/mode out.....
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