1. O sursă de oscilații aflată într-un mediu elastic produce unde plane de forma y=50sin(4nt) (mm). Lungimea de undă a undelor longitudinale produse este 1=2 m. Să se afle: a. după cât timp va începe să oscileze un punct situat la distanța x=6 m fată de sursă? b. defazajul între sursă şi punctul de la a. c. distanța dintre două puncte dacă oscilațiile sunt defazate între ele cu t/6
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1. O sursă de oscilații aflată într-un mediu elastic produce unde plane de forma y=50sin(4nt) (mm)....
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