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Φυσική ΓΓυμνασίου - Κεφάλαιο 5 ο : Μηχανικά Κύματα Κεφάλαιο 5 ο : Μηχανικά Κύματα Φυσική ΓΓυμνασίου

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  • - 5:

    5:

  • - 5:

  • - 5:

    :..

    , ,

    :

    :

    ,,,, :

    . .

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    ..

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    : ..

    , ,.

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    : ..

    :

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    ..

    .

    ', .

    .

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    ..

    .

    .

    .

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    (T):

    (f):

    (A): )

    ():

    ():

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    ():

    ()

    ()

    () ():

    1 :

    1f = : f

    = =

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    ():

    ()+

    () ():

    1 :

    1f = : f

    = =

  • - 5:

    : ' .

    f = =

    :

    (). (.. ( /).

  • - 5:

    : =1 m :=1m :=1m/s

    1 / 11m sf f Hzm

    = = = =

    5.1(102)

    1m ( )

  • - 5:

    , ..

    ,().

    : 20 Hz :. 20Hz :. 20kHz

    :,,.

  • - 5:

    (m/s)

    : , , .

    (m/s)

    (20C) 344:,,.

    (20C) 999(20C) 1.330

    .

    (269C) 211(20C) 1.451

    ' '

    (0C) 1.402(20C) 1.482 (100C) 1 543 .

    (100C) 1.543

    3.445.

    3.480pyrex 5.170 5.790

  • - 5:

    : ..

    ..

    = 1400m/s t=4s t=4s.

  • - 5:

  • - 5:

    (decibel dB): (decibel,dB):

    10dB10

    20dB100=102

    30dB1000=103

  • - 5:

    : .

    . .

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    : ,,..

    .

    (1.000Hz)' .

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