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{"id":22864,"date":"2022-11-01T14:06:55","date_gmt":"2022-11-01T14:06:55","guid":{"rendered":"https:\/\/www.acasinhadamatematica.pt\/?p=22864"},"modified":"2022-11-01T14:39:04","modified_gmt":"2022-11-01T14:39:04","slug":"uma-sonda-sonora","status":"publish","type":"post","link":"https:\/\/www.acasinhadamatematica.pt\/?p=22864","title":{"rendered":"Uma sonda sonora especial"},"content":{"rendered":"\n<p><ul id='GTTabs_ul_22864' class='GTTabs' style='display:none'>\n<li id='GTTabs_li_0_22864' class='GTTabs_curr'><a  id=\"22864_0\" onMouseOver=\"GTTabsShowLinks('Enunciado'); return true;\"  onMouseOut=\"GTTabsShowLinks();\"  class='GTTabsLinks'>Enunciado<\/a><\/li>\n<li id='GTTabs_li_1_22864' ><a  id=\"22864_1\" onMouseOver=\"GTTabsShowLinks('Resolu\u00e7\u00e3o'); return true;\"  onMouseOut=\"GTTabsShowLinks();\"  class='GTTabsLinks'>Resolu\u00e7\u00e3o<\/a><\/li>\n<\/ul>\n\n<div class='GTTabs_divs GTTabs_curr_div' id='GTTabs_0_22864'>\n<span class='GTTabs_titles'><b>Enunciado<\/b><\/span><\/p>\n<p>Os navios possuem uma sonda sonora especial para descobrir a profundidade do lugar onde se encontram. Essa sonda envia uma onda sonora que bate no fundo do mar e o retorno do som \u00e9 ouvido ap\u00f3s alguns segundos.<\/p>\n<p>Um navio enviou uma onda sonora que levou 0,6 segundos a ser ouvida.<\/p>\n<p>Sabendo que a velocidade do som na \u00e1gua \u00e9 de aproximadamente \\(1,5 \\times {10^3}\\) metros por segundo, qual \u00e9 a profundidade da \u00e1gua sob esse navio?<\/p>\n<p><div class='GTTabsNavigation' style='display:none'><span class='GTTabs_nav_next'><a href='#GTTabs_ul_22864' onClick='GTTabs_show(1,22864)'>Resolu\u00e7\u00e3o &gt;&gt;<\/a><\/span><\/div><\/div>\n\n<div class='GTTabs_divs' id='GTTabs_1_22864'>\n<span class='GTTabs_titles'><b>Resolu\u00e7\u00e3o<\/b><\/span><!--more--><\/p>\n<blockquote>\n<p>Um navio enviou uma onda sonora que levou 0,6 segundos a ser ouvida.<\/p>\n<p>Sabendo que a velocidade do som na \u00e1gua \u00e9 de aproximadamente \\(1,5 \\times {10^3}\\) metros por segundo, qual \u00e9 a profundidade da \u00e1gua sob esse navio?<\/p>\n<\/blockquote>\n<p>\u00a0<\/p>\n<p>\\[P=\\frac{0,6\\,s\\times 1,5\\times {{10}^{3}}\\,m\/s}{2}=0,3\\times 1,5\\times {{10}^{3}}\\,m=0,45\\times {{10}^{3}}\\,m=450\\,m\\] <img loading=\"lazy\" decoding=\"async\" data-attachment-id=\"6619\" data-permalink=\"https:\/\/www.acasinhadamatematica.pt\/?attachment_id=6619\" data-orig-file=\"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2011\/03\/image_sci_forces035b.jpg\" data-orig-size=\"272,350\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"image_sci_forces035b\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2011\/03\/image_sci_forces035b.jpg\" class=\"alignright wp-image-6619 size-full\" src=\"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2011\/03\/image_sci_forces035b.jpg\" alt=\"\" width=\"272\" height=\"350\" srcset=\"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2011\/03\/image_sci_forces035b.jpg 272w, https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2011\/03\/image_sci_forces035b-233x300.jpg 233w, https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2011\/03\/image_sci_forces035b-116x150.jpg 116w\" sizes=\"auto, (max-width: 272px) 100vw, 272px\" \/><\/p>\n<p><span style=\"font-size: revert; color: initial;\">A profundidade da \u00e1gua sob esse navio \u00e9 de 450 metros.<\/span><\/p>\n<audio class=\"wp-audio-shortcode\" id=\"audio-22864-1\" loop autoplay preload=\"none\" style=\"width: 100%;\" controls=\"controls\"><source type=\"audio\/mpeg\" src=\"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2011\/03\/Sonar_pings.mp3?_=1\" \/><a href=\"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2011\/03\/Sonar_pings.mp3\">https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2011\/03\/Sonar_pings.mp3<\/a><\/audio>\n<div class='GTTabsNavigation' style='display:none'><span class='GTTabs_nav_prev'><a href='#GTTabs_ul_22864' onClick='GTTabs_show(0,22864)'>&lt;&lt; Enunciado<\/a><\/span><\/div><\/div>\n\n","protected":false},"excerpt":{"rendered":"<p>Enunciado Resolu\u00e7\u00e3o Enunciado Os navios possuem uma sonda sonora especial para descobrir a profundidade do lugar onde se encontram. Essa sonda envia uma onda sonora que bate no fundo do mar e o retorno&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":20695,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[100,97,664],"tags":[424,143],"series":[],"class_list":["post-22864","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-8--ano","category-aplicando","category-numeros-reais","tag-8-o-ano","tag-notacao-cientifica"],"views":250,"jetpack_featured_media_url":"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2011\/03\/8V1Pag117-6_520x245.png","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"_links":{"self":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/posts\/22864","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=22864"}],"version-history":[{"count":0,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/posts\/22864\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/media\/20695"}],"wp:attachment":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=22864"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=22864"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=22864"},{"taxonomy":"series","embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fseries&post=22864"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}