Κυματα ασκησεις - θεωρία 2δ

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    13-Aug-2015

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<p> 1 , . 20..00z .. 20 z . , . .. .. .. ..(dB). . . . . . </p> <p> 2 u=100m/s . A =10m. N . 3 =5m A =0,5s . 4 . f=10Hz .</p> <p>2m</p> <p>4m</p> <p> 5 u=340m/s. A 3s, ; 6 5 20s. A 10m/s , . 7 80 5 .. 2s. .</p> <p> () ( ) (). . . . ( ) . u=f. . 20Hz-20.000Hz. . . , ( ).</p>