{"id":7907,"date":"2023-08-18T09:46:53","date_gmt":"2023-08-18T07:46:53","guid":{"rendered":"https:\/\/fizikaimatematika.com\/courses\/fizika-zadaci-osmi-razred-oscilatorno-i-talasno-kretanje\/lesson\/32-zadatak-prilikom-nailaska-voza-na-metalnu-konstrukciju\/"},"modified":"2023-08-18T09:46:53","modified_gmt":"2023-08-18T07:46:53","slug":"32-zadatak-prilikom-nailaska-voza-na-metalnu-konstrukciju","status":"publish","type":"lesson","link":"https:\/\/fizikaimatematika.com\/courses\/fizika-zadaci-osmi-razred-oscilatorno-i-talasno-kretanje\/lesson\/32-zadatak-prilikom-nailaska-voza-na-metalnu-konstrukciju\/","title":{"rendered":"32. zadatak: Prilikom nailaska voza na metalnu konstrukciju &#8230;"},"content":{"rendered":"<p>\u041f\u0440\u0438\u043b\u0438\u043a\u043e\u043c \u043d\u0430\u0438\u043b\u0430\u0441\u043a\u0430 \u0432\u043e\u0437\u0430 \u043d\u0430 \u043c\u0435\u0442\u0430\u043b\u043d\u0443 \u043a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u0458\u0443 \u043c\u043e\u0441\u0442\u0430 \u0434\u043e\u043b\u0430\u0437\u0438 \u0434\u043e \u0441\u0442\u0432\u0430\u0440\u0430\u045a\u0430 \u043c\u0435\u0445\u0430\u043d\u0438\u0447\u043a\u043e\u0433 \u0442\u0430\u043b\u0430\u0441\u0430 \u043a\u043e\u0458\u0438 \u0441\u0435 \u043f\u0440\u043e\u0441\u0442\u0438\u0440\u0435 \u043a\u0440\u043e\u0437 \u0433\u0432\u043e\u0437\u0434\u0435\u043d\u0435 \u0448\u0438\u043d\u0435, \u0430 \u0442\u0430\u043a\u043e\u0452\u0435 \u0441\u0435 \u0441\u0442\u0432\u0430\u0440\u0430 \u0438 \u0437\u0432\u0443\u0447\u043d\u0438 \u0442\u0430\u043b\u0430\u0441 \u043a\u043e\u0458\u0438 \u0441\u0435 \u043f\u0440\u043e\u0441\u0442\u0438\u0440\u0435 \u043a\u0440\u043e\u0437 \u0432\u0430\u0437\u0434\u0443\u0445. \u0423\u0434\u0430\u0459\u0435\u043d\u0438<\/p>\n<p>\u041f\u043e\u0441\u043c\u0430\u0442\u0440\u0430\u0447 \u043a\u043e\u0458\u0438 \u0441\u0435 \u043d\u0430\u043b\u0430\u0437\u0438 \u0443 \u0431\u043b\u0438\u0437\u0438\u043d\u0438 \u0448\u0438\u043d\u0430 \u045b\u0435, \u043f\u043e\u0441\u043b\u0435 \u043d\u0430\u0438\u043b\u0430\u0441\u043a\u0430 \u0432\u043e\u0437\u0430 \u043d\u0430 \u043c\u043e\u0441\u0442, \u043f\u0440\u0432\u043e \u0447\u0443\u0442\u0438 \u0437\u0432\u0443\u043a \u043a\u043e\u0458\u0438 \u00a0\u043d\u0430\u0441\u0442\u0430\u0458\u0435 \u043e\u0434 \u043f\u0440\u043e\u0441\u0442\u0440\u0430\u045a\u0430 \u043c\u0435\u0445\u0430\u0445\u0438\u0447\u043a\u043e\u0433 \u0442\u0430\u043b\u0430\u0441\u0430 \u043a\u0440\u043e\u0437 \u0448\u0438\u043d\u0435, \u0430 \u043f\u043e\u0441\u043b\u0435 \u0432\u0440\u0435\u043c\u0435\u043d\u0430 \u0394t = 2 s \u043c\u043e\u045b\u0438 \u0434\u0430 \u0447\u0443\u0458\u0435 \u0438 \u0437\u0432\u0443\u0447\u043d\u0438 \u0442\u0430\u043b\u0430\u0441 \u043a\u043e\u0458\u0438 \u0441\u0435 \u043f\u0440\u043e\u0441\u0442\u0438\u0440\u0435 \u043a\u0440\u043e\u0437 \u0432\u0430\u0437\u0434\u0443\u0445 \u043e\u0434 \u0432\u043e\u0437\u0430 \u043d\u0430 \u043c\u043e\u0441\u0442\u0443 \u043a\u0430 \u043f\u043e\u0441\u043c\u0430\u0442\u0440\u0430\u0447\u0443. \u0411\u0440\u0437\u0438\u043d\u0430 \u0437\u0432\u0443\u043a\u0430 \u0443 \u0432\u0430\u0437\u0434\u0443\u0445\u0443 \u0458\u0435 340 m\/s, \u0430 \u0431\u0440\u0437\u0438\u043d\u0430 \u043c\u0435\u0445\u0430\u043d\u0438\u0447\u043a\u043e\u0433 \u0442\u0430\u043b\u0430\u0441\u0430 \u0443 \u0433\u0432\u043e\u0437\u043b\u0435\u043d\u0438m \u0448\u0438\u043d\u0430\u043c\u0430 5 000 m\/s. \u041e\u0434\u0440\u0435\u0434\u0438\u0442\u0438 \u0440\u0430\u0441\u0442\u043e\u0458\u0430\u045a\u0435 \u043f\u043e\u0441\u043c\u0430\u0442\u0440\u0430\u0447\u0430 \u043e\u0434 \u043c\u043e\u0441\u0442\u0430. \u0421\u043c\u0430\u0442\u0440\u0430\u0442\u0438 \u0434\u0430 \u0441\u0443 \u0448\u0438\u043d\u0435 \u043e\u0434 \u043c\u043e\u0441\u0442\u0430 \u0434\u043e \u043f\u043e\u0441\u043c\u0430\u0442\u0440\u0430\u0447\u0430 \u043f\u0440\u0430\u0432\u0435 \u0438 \u0434\u0430 \u0441\u0443 \u0434\u0438\u043c\u0435\u043d\u0437\u0438\u0458\u0435 \u043c\u043e\u0441\u0442\u0430 \u0437\u0430\u043d\u0435\u043c\u0430\u0440\u0459\u0438\u0432\u0435 \u0443 \u043e\u0434\u043d\u043e\u0441\u0443 \u043d\u0430 \u0440\u0430\u0441\u0442\u043e\u0458\u0430\u045a\u0435 \u043f\u043e\u0441\u043c\u0430\u0442\u0440\u0430\u0447\u0430 \u043e\u0434 \u043c\u043e\u0441\u0442\u0430.<\/p>\n<ul>\n<li>Prilikom nailaska voza na metalnu konstrukciju mosta dolazi do stvaranja mehani\u010dkog talasa koji se prostire kroz gvozdene \u0161ine, a tako\u0111e se stvara i zvu\u010dni talas koji se prostire kroz vazduh. Udaljeni Posmatra\u010d koji se nalazi u blizini \u0161ina c\u0301e, posle nailaska voza na most, prvo \u010duti zvuk koji nastaje od prostranja mehahi\u010dkog talasa kroz \u0161ine, a posle vremena \u0394t = 2 s moc\u0301i da \u010duje i zvu\u010dni talas koji se prostire kroz vazduh od voza na mostu ka posmatra\u010du. Brzina zvuka u vazduhu je 340 m\/s, a brzina mehani\u010dkog talasa u gvozlenim \u0161inama 5 000 m\/s. Odrediti rastojanje posmatra\u010da od mosta. Smatrati da su \u0161ine od mosta do posmatra\u010da prave i da su dimenzije mosta zanemarljive u odnosu na rastojanje posmatra\u010da od mosta.<\/li>\n<\/ul>\n","protected":false},"comment_status":"open","ping_status":"closed","template":"","_links":{"self":[{"href":"https:\/\/fizikaimatematika.com\/index.php\/wp-json\/wp\/v2\/lesson\/7907"}],"collection":[{"href":"https:\/\/fizikaimatematika.com\/index.php\/wp-json\/wp\/v2\/lesson"}],"about":[{"href":"https:\/\/fizikaimatematika.com\/index.php\/wp-json\/wp\/v2\/types\/lesson"}],"replies":[{"embeddable":true,"href":"https:\/\/fizikaimatematika.com\/index.php\/wp-json\/wp\/v2\/comments?post=7907"}],"wp:attachment":[{"href":"https:\/\/fizikaimatematika.com\/index.php\/wp-json\/wp\/v2\/media?parent=7907"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}