{"id":10328,"date":"2023-02-03T16:07:25","date_gmt":"2023-02-03T15:07:25","guid":{"rendered":"https:\/\/agora.xtec.cat\/insdertosa\/?p=10328"},"modified":"2023-02-03T16:08:40","modified_gmt":"2023-02-03T15:08:40","slug":"els-experiments-de-fisica-al-batxillerat-internacional","status":"publish","type":"post","link":"https:\/\/agora.xtec.cat\/insdertosa\/general\/els-experiments-de-fisica-al-batxillerat-internacional\/","title":{"rendered":"Els experiments de f\u00edsica al Batxillerat Internacional"},"content":{"rendered":"<p>Alguns dels experiments que fem a les classes de f\u00edsica del BI s\u00f3n demostratius i el seu objectiu \u00e9s clarificar conceptes o mostrar un fenomen f\u00edsic:<\/p>\n<table style=\"border-collapse: collapse;width: 100%;height: 32px\">\n<tbody>\n<tr style=\"height: 32px\">\n<td style=\"width: 66.4045%;height: 32px;border-style: hidden\"><iframe loading=\"lazy\" title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/Xa3v4601Z9k\" width=\"560\" height=\"315\" frameborder=\"0\"><\/iframe><\/td>\n<td style=\"width: 33.5955%;height: 32px;border-style: hidden\"><a href=\"https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/12.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-large wp-image-10327\" src=\"https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/12-1024x771.jpg\" alt=\"\" width=\"1024\" height=\"771\" srcset=\"https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/12-1024x771.jpg 1024w, https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/12-300x226.jpg 300w, https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/12-768x578.jpg 768w, https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/12-1536x1156.jpg 1536w, https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/12-200x150.jpg 200w, https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/12.jpg 1600w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul style=\"list-style-type: square\">\n<li style=\"text-align: left\">Imitaci\u00f3 d\u2019un \u201csism\u00f2graf\u201d que permet visualitzar el despla\u00e7ament de les ones longitudinals.<\/li>\n<li>Tubs de so. La freq\u00fc\u00e8ncia del so produ\u00eft dep\u00e8n de la velocitat a la que es gira el tub. Es poden escoltar diferents harm\u00f2nics.<\/li>\n<\/ul>\n<p>Altres experiments impliquen l\u2019adquisici\u00f3 de dades quantitatives, aix\u00ed com l\u2019an\u00e0lisi d\u2019aquestes dades i tenen com objectiu que l\u2019estudiant adquireixi habilitats en experimentaci\u00f3. Per exemple:<\/p>\n<table style=\"border-collapse: collapse;width: 100%;height: 248px\">\n<tbody>\n<tr style=\"height: 31px\">\n<td style=\"width: 72.809%;border-style: hidden;height: 31px\">\n<ul style=\"list-style-type: square\">\n<li>Caiguda lliure d\u2019un cos: Els nostres alumnes investiguen el moviment de caiguda lliure de un cos (boletes que es deixen caure per un tub) utilitzant sensors de moviment. L\u2019an\u00e0lisi de les dades obtingudes ens permet\u00a0determinar el valor de l\u2019acceleraci\u00f3 de la gravetat.<\/li>\n<\/ul>\n<\/td>\n<td style=\"width: 27.191%;border-style: hidden;height: 31px\"><a href=\"https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/Imagen-1.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-10330\" src=\"https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/Imagen-1.jpg\" alt=\"\" width=\"149\" height=\"198\" srcset=\"https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/Imagen-1.jpg 412w, https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/Imagen-1-225x300.jpg 225w\" sizes=\"auto, (max-width: 149px) 100vw, 149px\" \/><\/a><\/td>\n<\/tr>\n<tr style=\"height: 31px\">\n<td style=\"width: 72.809%;border-style: hidden;height: 31px\">\n<ul style=\"list-style-type: square\">\n<li>Lley de Boyle: Els alumnes estudien la relaci\u00f3 P, V en un gas, utilitzant un sensor de pressi\u00f3. A partir de les dades obtingudes faran una estimaci\u00f3 de la constant dels gasos ideals.<\/li>\n<\/ul>\n<\/td>\n<td style=\"width: 27.191%;border-style: hidden;height: 31px\"><a href=\"https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/6.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-10321\" src=\"https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/6-1024x771.jpg\" alt=\"\" width=\"289\" height=\"218\" srcset=\"https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/6-1024x771.jpg 1024w, https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/6-300x226.jpg 300w, https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/6-768x578.jpg 768w, https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/6-1536x1156.jpg 1536w, https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/6-200x150.jpg 200w, https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/6.jpg 1600w\" sizes=\"auto, (max-width: 289px) 100vw, 289px\" \/><\/a><\/td>\n<\/tr>\n<tr style=\"height: 31px\">\n<td style=\"width: 72.809%;border-style: hidden;height: 31px\">\n<ul style=\"list-style-type: square\">\n<li>Variaci\u00f3 de la resist\u00e8ncia amb la temperatura. En aquesta pr\u00e0ctica es comprova que el filament d\u2019una bombeta incandescent \u00e9s un resistor no \u00f3hmic, \u00e9s a dir, la seva relaci\u00f3 voltatge-intensitat no \u00e9s lineal. \u00a0Aix\u00f2 \u00e9s degut a qu\u00e8 la resist\u00e8ncia del filament canvia amb la temperatura.<\/li>\n<\/ul>\n<\/td>\n<td style=\"width: 27.191%;border-style: hidden;height: 31px\"><a href=\"https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/Imagen-2.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-10335\" src=\"https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/Imagen-2.jpg\" alt=\"\" width=\"147\" height=\"195\" srcset=\"https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/Imagen-2.jpg 326w, https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/Imagen-2-226x300.jpg 226w\" sizes=\"auto, (max-width: 147px) 100vw, 147px\" \/><\/a><\/td>\n<\/tr>\n<tr style=\"height: 31px\">\n<td style=\"width: 72.809%;border-style: hidden;height: 31px\">\n<ul style=\"list-style-type: square\">\n<li>M\u00e8tode per determinar la resist\u00e8ncia interna d\u2019una pila. Es determina una resist\u00e8ncia desconeguda a partir de la mesura de la intensitat i el voltatge en un circuit amb un altra resist\u00e8ncia variable.<\/li>\n<\/ul>\n<\/td>\n<td style=\"width: 27.191%;border-style: hidden;height: 31px\"><a href=\"https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/Imagen-3.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-10336\" src=\"https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/Imagen-3.png\" alt=\"\" width=\"635\" height=\"464\" srcset=\"https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/Imagen-3.png 635w, https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/Imagen-3-300x219.png 300w\" sizes=\"auto, (max-width: 635px) 100vw, 635px\" \/><\/a><\/td>\n<\/tr>\n<tr style=\"height: 31px\">\n<td style=\"width: 72.809%;border-style: hidden;height: 31px\">\n<ul>\n<li>C\u00e0rrega i desc\u00e0rrega d\u2019un condensador. Obtenci\u00f3 de la corba de c\u00e0rrega i de desc\u00e0rrega d\u2019un condensador en un circuit RC. Ee determina experimentalment la constat de temps caracter\u00edstica d\u2019aquest circuit.<\/li>\n<\/ul>\n<\/td>\n<td style=\"width: 27.191%;border-style: hidden;height: 31px\"><a href=\"https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/Imagen-4.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-10337\" src=\"https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/Imagen-4.jpg\" alt=\"\" width=\"776\" height=\"583\" srcset=\"https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/Imagen-4.jpg 776w, https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/Imagen-4-300x225.jpg 300w, https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/Imagen-4-768x577.jpg 768w, https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/Imagen-4-200x150.jpg 200w\" sizes=\"auto, (max-width: 776px) 100vw, 776px\" \/><\/a><\/td>\n<\/tr>\n<tr style=\"height: 31px\">\n<td style=\"width: 72.809%;border-style: hidden;height: 31px\">\n<ul style=\"list-style-type: square\">\n<li>Determinaci\u00f3 del camp el\u00e8ctric d\u2019un dipol i d\u2019un condensador pla a partir de la mesura del voltatge en una cubeta electrol\u00edtica.<\/li>\n<\/ul>\n<\/td>\n<td style=\"width: 27.191%;border-style: hidden;height: 31px\"><a href=\"https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/Imagen-5.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-10338\" src=\"https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/Imagen-5.jpg\" alt=\"\" width=\"757\" height=\"568\" srcset=\"https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/Imagen-5.jpg 757w, https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/Imagen-5-300x225.jpg 300w, https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/Imagen-5-200x150.jpg 200w\" sizes=\"auto, (max-width: 757px) 100vw, 757px\" \/><\/a><\/td>\n<\/tr>\n<tr style=\"height: 31px\">\n<td style=\"width: 72.809%;border-style: hidden;height: 31px\">\n<ul style=\"list-style-type: square\">\n<li>Experiment de la doble escletxa de Young. Permet observar el fenomen d\u2019interfer\u00e8ncia d\u2019ones. Es pot determinar la longitud d\u2019ona del l\u00e0ser a partir de les mesures realitzades.<\/li>\n<\/ul>\n<\/td>\n<td style=\"width: 27.191%;border-style: hidden;height: 31px\"><a href=\"https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/11.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-large wp-image-10326\" src=\"https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/11-1024x771.jpg\" alt=\"\" width=\"1024\" height=\"771\" srcset=\"https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/11-1024x771.jpg 1024w, https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/11-300x226.jpg 300w, https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/11-768x578.jpg 768w, https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/11-1536x1156.jpg 1536w, https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/11-200x150.jpg 200w, https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/11.jpg 1600w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>I molts altres experiments que farem les properes setmanes, com per exemple la determinaci\u00f3 de la velocitat del so utilitzant les ones estacion\u00e0ries que es formen en un tub.<\/p>\n<p>Finalment, l&#8217;alumnat tamb\u00e9 fa \u00fas de simuladors interactius, com les desenvolupades per la Universitat de Colorado Boulder (<a href=\"https:\/\/phet.colorado.edu\/es\/\">https:\/\/phet.colorado.edu\/es\/<\/a>) per comprendre amb m\u00e9s detall la relaci\u00f3 entre les diverses variables dels models.<\/p>\n<p>L\u2019avaluaci\u00f3 de les habilitats experimentals adquirides per l&#8217;alumnat, es realitza mitjan\u00e7ant dos elements. En primer lloc, el seu projecte individual, o \u201cavaluaci\u00f3 interna\u201d (AI), on l\u2019alumnat dissenya el seu propi experiment, el porta a terme i analitza els resultats obtinguts. Aquesta AI constituir\u00e0 el 20% de la nota obtinguda a l\u2019assignatura. En segon lloc, mitjan\u00e7ant una de les proves d\u2019avaluaci\u00f3 externa, la prova 3, que cont\u00e9 una secci\u00f3 de preguntes basades en experiments.<\/p>\n<p style=\"text-align: center\">\r\n\t<div class=\"slideshow_container slideshow_container_style-light\" style=\"height: 300px; \" data-slideshow-id=\"10315\" data-style-name=\"style-light\" data-style-version=\"2.3.1\" >\r\n\r\n\t\t\t\t\t<div class=\"slideshow_loading_icon\"><\/div>\r\n\t\t\r\n\t\t<div class=\"slideshow_content\" style=\"display: none;\">\r\n\r\n\t\t\t<div class=\"slideshow_view\">\r\n\t\t\t\t<div class=\"slideshow_slide slideshow_slide_image\">\r\n\t\t\t\t\t\t\t\t\t\t\t<img src=\"https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/12.jpg\" alt=\"12\" width=\"1600\" height=\"1204\" \/>\r\n\t\t\t\t\t\t\t\t\t\t<div class=\"slideshow_description_box slideshow_transparent\">\r\n\t\t\t\t\t\t<div class=\"slideshow_title\">12<\/div>\t\t\t\t\t\t\t\t\t\t\t<\/div>\r\n\t\t\t\t<\/div>\r\n\r\n\t\t\t\t\t\t<div style=\"clear: both;\"><\/div><\/div><div class=\"slideshow_view\">\r\n\t\t\t\t<div class=\"slideshow_slide slideshow_slide_image\">\r\n\t\t\t\t\t\t\t\t\t\t\t<img src=\"https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/11.jpg\" alt=\"11\" width=\"1600\" height=\"1204\" \/>\r\n\t\t\t\t\t\t\t\t\t\t<div class=\"slideshow_description_box slideshow_transparent\">\r\n\t\t\t\t\t\t<div class=\"slideshow_title\">11<\/div>\t\t\t\t\t\t\t\t\t\t\t<\/div>\r\n\t\t\t\t<\/div>\r\n\r\n\t\t\t\t\t\t<div style=\"clear: both;\"><\/div><\/div><div class=\"slideshow_view\">\r\n\t\t\t\t<div class=\"slideshow_slide slideshow_slide_image\">\r\n\t\t\t\t\t\t\t\t\t\t\t<img src=\"https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/10.jpg\" alt=\"10\" width=\"1600\" height=\"1204\" \/>\r\n\t\t\t\t\t\t\t\t\t\t<div class=\"slideshow_description_box slideshow_transparent\">\r\n\t\t\t\t\t\t<div class=\"slideshow_title\">10<\/div>\t\t\t\t\t\t\t\t\t\t\t<\/div>\r\n\t\t\t\t<\/div>\r\n\r\n\t\t\t\t\t\t<div style=\"clear: both;\"><\/div><\/div><div class=\"slideshow_view\">\r\n\t\t\t\t<div class=\"slideshow_slide slideshow_slide_image\">\r\n\t\t\t\t\t\t\t\t\t\t\t<img src=\"https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/9.jpg\" alt=\"9\" width=\"1600\" height=\"1204\" \/>\r\n\t\t\t\t\t\t\t\t\t\t<div class=\"slideshow_description_box slideshow_transparent\">\r\n\t\t\t\t\t\t<div class=\"slideshow_title\">9<\/div>\t\t\t\t\t\t\t\t\t\t\t<\/div>\r\n\t\t\t\t<\/div>\r\n\r\n\t\t\t\t\t\t<div style=\"clear: both;\"><\/div><\/div><div class=\"slideshow_view\">\r\n\t\t\t\t<div class=\"slideshow_slide slideshow_slide_image\">\r\n\t\t\t\t\t\t\t\t\t\t\t<img src=\"https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/8.jpg\" alt=\"8\" width=\"1600\" height=\"1204\" \/>\r\n\t\t\t\t\t\t\t\t\t\t<div class=\"slideshow_description_box slideshow_transparent\">\r\n\t\t\t\t\t\t<div class=\"slideshow_title\">8<\/div>\t\t\t\t\t\t\t\t\t\t\t<\/div>\r\n\t\t\t\t<\/div>\r\n\r\n\t\t\t\t\t\t<div style=\"clear: both;\"><\/div><\/div><div class=\"slideshow_view\">\r\n\t\t\t\t<div class=\"slideshow_slide slideshow_slide_image\">\r\n\t\t\t\t\t\t\t\t\t\t\t<img src=\"https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/7.jpg\" alt=\"7\" width=\"1600\" height=\"1204\" \/>\r\n\t\t\t\t\t\t\t\t\t\t<div class=\"slideshow_description_box slideshow_transparent\">\r\n\t\t\t\t\t\t<div class=\"slideshow_title\">7<\/div>\t\t\t\t\t\t\t\t\t\t\t<\/div>\r\n\t\t\t\t<\/div>\r\n\r\n\t\t\t\t\t\t<div style=\"clear: both;\"><\/div><\/div><div class=\"slideshow_view\">\r\n\t\t\t\t<div class=\"slideshow_slide slideshow_slide_image\">\r\n\t\t\t\t\t\t\t\t\t\t\t<img src=\"https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/6.jpg\" alt=\"6\" width=\"1600\" height=\"1204\" \/>\r\n\t\t\t\t\t\t\t\t\t\t<div class=\"slideshow_description_box slideshow_transparent\">\r\n\t\t\t\t\t\t<div class=\"slideshow_title\">6<\/div>\t\t\t\t\t\t\t\t\t\t\t<\/div>\r\n\t\t\t\t<\/div>\r\n\r\n\t\t\t\t\t\t<div style=\"clear: both;\"><\/div><\/div><div class=\"slideshow_view\">\r\n\t\t\t\t<div class=\"slideshow_slide slideshow_slide_image\">\r\n\t\t\t\t\t\t\t\t\t\t\t<img src=\"https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/5.jpg\" alt=\"5\" width=\"2040\" height=\"1536\" \/>\r\n\t\t\t\t\t\t\t\t\t\t<div class=\"slideshow_description_box slideshow_transparent\">\r\n\t\t\t\t\t\t<div class=\"slideshow_title\">5<\/div>\t\t\t\t\t\t\t\t\t\t\t<\/div>\r\n\t\t\t\t<\/div>\r\n\r\n\t\t\t\t\t\t<div style=\"clear: both;\"><\/div><\/div><div class=\"slideshow_view\">\r\n\t\t\t\t<div class=\"slideshow_slide slideshow_slide_image\">\r\n\t\t\t\t\t\t\t\t\t\t\t<img src=\"https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/4.jpg\" alt=\"4\" width=\"2040\" height=\"1536\" \/>\r\n\t\t\t\t\t\t\t\t\t\t<div class=\"slideshow_description_box slideshow_transparent\">\r\n\t\t\t\t\t\t<div class=\"slideshow_title\">4<\/div>\t\t\t\t\t\t\t\t\t\t\t<\/div>\r\n\t\t\t\t<\/div>\r\n\r\n\t\t\t\t\t\t<div style=\"clear: both;\"><\/div><\/div><div class=\"slideshow_view\">\r\n\t\t\t\t<div class=\"slideshow_slide slideshow_slide_image\">\r\n\t\t\t\t\t\t\t\t\t\t\t<img src=\"https:\/\/agora.xtec.cat\/insdertosa\/wp-content\/uploads\/usu144\/2023\/02\/3.jpg\" alt=\"3\" width=\"1600\" height=\"1204\" \/>\r\n\t\t\t\t\t\t\t\t\t\t<div class=\"slideshow_description_box slideshow_transparent\">\r\n\t\t\t\t\t\t<div class=\"slideshow_title\">3<\/div>\t\t\t\t\t\t\t\t\t\t\t<\/div>\r\n\t\t\t\t<\/div>\r\n\r\n\t\t\t\t\t\t<div style=\"clear: both;\"><\/div><\/div><div class=\"slideshow_view\">\r\n\t\t\t\t<div class=\"slideshow_slide slideshow_slide_image\">\r\n\t\t\t\t\t\t\t\t\t\t\t<img 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permet visualitzar el despla\u00e7ament de les ones longitudinals. 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