{"id":6490,"date":"2026-02-24T12:54:53","date_gmt":"2026-02-24T11:54:53","guid":{"rendered":"https:\/\/www.zsvltava.cz\/fyzika\/?p=6490"},"modified":"2026-02-24T12:56:10","modified_gmt":"2026-02-24T11:56:10","slug":"tucet-prikladu-se-zvukem","status":"publish","type":"post","link":"https:\/\/www.zsvltava.cz\/fyzika\/?p=6490","title":{"rendered":"Tucet p\u0159\u00edklad\u016f se zvukem"},"content":{"rendered":"<ol>\n<li>Zvukov\u00e1 vlna m\u00e1 periodu 0,001 s. Jakou m\u00e1 frekvenci?<\/li>\n<li>Jak\u00e1 je frekvence minutov\u00e9 ru\u010di\u010dky na hodin\u00e1ch?<\/li>\n<li>Ve \u0161koln\u00ed chodb\u011b je sv\u011btlo, kter\u00e9 blik\u00e1 pravideln\u011b ka\u017ed\u00fdch 0,4 sekundy. Jak\u00e1 je jeho frekvence blik\u00e1n\u00ed?<\/li>\n<li>Reproduktor p\u0159ehr\u00e1v\u00e1 t\u00f3n s frekvenc\u00ed 5000 Hz. Jakou m\u00e1 zvuk periodu?<\/li>\n<li>Jak\u00e1 je frekvence ot\u00e1\u010den\u00ed, pokud se kolo oto\u010d\u00ed 3kr\u00e1t za sekundu?<\/li>\n<li>Kyvadlo hodin se zhoupne tam a zp\u011bt ka\u017ed\u00fdch 2,5 sekundy. Jak\u00e1 je frekvence pohybu kyvadla?<\/li>\n<li>V \u010desk\u00e9 elektrick\u00e9 s\u00edti st\u0159\u00eddav\u00fd proud m\u011bn\u00ed sm\u011br 50kr\u00e1t za sekundu. Jak\u00e1 je frekvence proudu? Jak dlouho trv\u00e1 jeden cyklus?<\/li>\n<li>D\u00edt\u011b sk\u00e1\u010de na trampol\u00edn\u011b tak, \u017ee ka\u017ed\u00fd skok (nahoru a dol\u016f) mu trv\u00e1 p\u0159ibli\u017en\u011b 1,2 sekundy. Jak\u00e1 je frekvence jeho sk\u00e1k\u00e1n\u00ed?<\/li>\n<li>Kolib\u0159\u00edk m\u00e1v\u00e1 k\u0159\u00eddly 70kr\u00e1t za sekundu. Jak\u00e1 je frekvence? Jak\u00e1 je perioda jednoho m\u00e1vnut\u00ed?<\/li>\n<li>Jakou nejvy\u0161\u0161\u00ed a nejni\u017e\u0161\u00ed vlnovou d\u00e9lku m\u016f\u017ee m\u00edt zvuk, abychom ho sly\u0161eli? <br \/>(16 Hz \u2013 16 000 Hz, \u03bb = v \/ f)<\/li>\n<li>Zp\u011bv\u00e1k vyd\u00e1v\u00e1 t\u00f3n o frekvenci 440 Hz. Rychlost zvuku ve vzduchu je p\u0159ibli\u017en\u011b 340 m\/s. Jak\u00e1 je vlnov\u00e1 d\u00e9lka tohoto t\u00f3nu?<\/li>\n<li>Na jeze\u0159e vznikaj\u00ed pravideln\u00e9 vodn\u00ed vlny, kter\u00e9 maj\u00ed frekvenci 2 Hz a \u0161\u00ed\u0159\u00ed se rychlost\u00ed 1,5 m\/s. Jak\u00e1 je vlnov\u00e1 d\u00e9lka t\u011bchto vln?<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>Zvukov\u00e1 vlna m\u00e1 periodu 0,001 s. Jakou m\u00e1 frekvenci? Jak\u00e1 je frekvence minutov\u00e9 ru\u010di\u010dky na hodin\u00e1ch? Ve \u0161koln\u00ed chodb\u011b je sv\u011btlo, kter\u00e9 blik\u00e1 pravideln\u011b ka\u017ed\u00fdch &#8230;. <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,61],"tags":[],"class_list":["post-6490","post","type-post","status-publish","format-standard","hentry","category-priklad","category-zvuk"],"_links":{"self":[{"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=\/wp\/v2\/posts\/6490","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6490"}],"version-history":[{"count":2,"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=\/wp\/v2\/posts\/6490\/revisions"}],"predecessor-version":[{"id":6492,"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=\/wp\/v2\/posts\/6490\/revisions\/6492"}],"wp:attachment":[{"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6490"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6490"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6490"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}