{"id":2158,"date":"2021-11-08T08:38:27","date_gmt":"2021-11-08T07:38:27","guid":{"rendered":"https:\/\/toulouse-sgencfdt.fr\/WORDPRESS_ITRF\/?p=2158"},"modified":"2021-11-08T08:38:27","modified_gmt":"2021-11-08T07:38:27","slug":"tp-comment-evaluer-la-distance-de-lorage","status":"publish","type":"post","link":"https:\/\/toulouse-sgencfdt.fr\/WORDPRESS_ITRF\/2021\/11\/08\/tp-comment-evaluer-la-distance-de-lorage\/","title":{"rendered":"TP: Comment \u00e9valuer la distance de l&#8217;orage?"},"content":{"rendered":"<p>Voici un petit contexte, un peu diff\u00e9rent, de l&#8217;utilisation des \u00e9metteurs et r\u00e9cepteurs d&#8217;US.<\/p>\n<p>&nbsp;<\/p>\n<a href=\"https:\/\/toulouse-sgencfdt.fr\/WORDPRESS_ITRF\/wp-content\/uploads\/2021\/11\/Activite-1-Propagation-des-ondes-sonores.pdf\" class=\"pdfemb-viewer\" style=\"\" data-width=\"max\" data-height=\"max\" data-toolbar=\"bottom\" data-toolbar-fixed=\"off\">Activit\u00e9 1 Propagation des ondes sonores<\/a>\n<p>R\u00e9ponse:<\/p>\n<p>Partie A:<\/p>\n<p>2:<img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-2159\" src=\"https:\/\/toulouse-sgencfdt.fr\/WORDPRESS_ITRF\/wp-content\/uploads\/2021\/11\/A-q2.png\" alt=\"\" width=\"252\" height=\"93\" \/><\/p>\n<p>3: La p\u00e9riode est T<sub>e<\/sub> = 5 x 5 = 25 \u03bcs (5 carreaux \u00e0 5 \u03bcs\/div).<\/p>\n<p>4: fe=1\/Te=40000Hz=40MHz<\/p>\n<p>&nbsp;<\/p>\n<p>Retour situation: La lumi\u00e8re se propage \u00e0 la vitesse c = 3,00.10<sup>8<\/sup> m.s<sup>-1<\/sup>, alors que le son se propage \u00e0 la vitesse v = 340 m.s<sup>-1<\/sup>. On peut n\u00e9gliger la dur\u00e9e de parcours de l\u2019\u00e9clair. Pour une dur\u00e9e de 1 s, la distance parcourue par le son est de 340 m. En multipliant par 300, on obtient rapidement une id\u00e9e de la distance en m\u00e8tre.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Voici un petit contexte, un peu diff\u00e9rent, de l&#8217;utilisation des \u00e9metteurs et r\u00e9cepteurs d&#8217;US. &nbsp; R\u00e9ponse: Partie A: 2: 3: La p\u00e9riode est Te = 5 x 5 = 25 \u03bcs (5 carreaux \u00e0 5 \u03bcs\/div). 4: fe=1\/Te=40000Hz=40MHz &nbsp; Retour situation: La lumi\u00e8re se propage \u00e0 la vitesse c = 3,00.108 m.s-1, alors que le &hellip; <a href=\"https:\/\/toulouse-sgencfdt.fr\/WORDPRESS_ITRF\/2021\/11\/08\/tp-comment-evaluer-la-distance-de-lorage\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">TP: Comment \u00e9valuer la distance de l&#8217;orage?<\/span>  <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,58],"tags":[],"class_list":["post-2158","post","type-post","status-publish","format-standard","hentry","category-non-classe","category-physique-chimie"],"_links":{"self":[{"href":"https:\/\/toulouse-sgencfdt.fr\/WORDPRESS_ITRF\/wp-json\/wp\/v2\/posts\/2158","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/toulouse-sgencfdt.fr\/WORDPRESS_ITRF\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/toulouse-sgencfdt.fr\/WORDPRESS_ITRF\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/toulouse-sgencfdt.fr\/WORDPRESS_ITRF\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/toulouse-sgencfdt.fr\/WORDPRESS_ITRF\/wp-json\/wp\/v2\/comments?post=2158"}],"version-history":[{"count":1,"href":"https:\/\/toulouse-sgencfdt.fr\/WORDPRESS_ITRF\/wp-json\/wp\/v2\/posts\/2158\/revisions"}],"predecessor-version":[{"id":2161,"href":"https:\/\/toulouse-sgencfdt.fr\/WORDPRESS_ITRF\/wp-json\/wp\/v2\/posts\/2158\/revisions\/2161"}],"wp:attachment":[{"href":"https:\/\/toulouse-sgencfdt.fr\/WORDPRESS_ITRF\/wp-json\/wp\/v2\/media?parent=2158"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/toulouse-sgencfdt.fr\/WORDPRESS_ITRF\/wp-json\/wp\/v2\/categories?post=2158"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/toulouse-sgencfdt.fr\/WORDPRESS_ITRF\/wp-json\/wp\/v2\/tags?post=2158"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}