{"id":2990,"date":"2019-01-16T07:50:17","date_gmt":"2019-01-16T06:50:17","guid":{"rendered":"http:\/\/agora.xtec.cat\/iesribotiserra\/?p=2990"},"modified":"2019-02-04T10:24:17","modified_gmt":"2019-02-04T09:24:17","slug":"densitat","status":"publish","type":"post","link":"https:\/\/agora.xtec.cat\/iesribotiserra\/portada\/densitat\/","title":{"rendered":"Densitat"},"content":{"rendered":"<p><strong>L&#8217;alumnat de 3r B ha treballat la llegenda d&#8217;Arquimedes i la corona d&#8217;or. El repte d&#8217;Arquimedes era descobrir si una corona estava feta nom\u00e9s d&#8217;or o si tenia algun altre metall barrejat.<\/strong><\/p>\n<p style=\"text-align: justify;\"><a href=\"https:\/\/agora.xtec.cat\/iesribotiserra\/wp-content\/uploads\/usu1672\/2019\/01\/IMG_20190111_131325.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2991\" src=\"https:\/\/agora.xtec.cat\/iesribotiserra\/wp-content\/uploads\/usu1672\/2019\/01\/IMG_20190111_131325.jpg\" alt=\"\" width=\"780\" height=\"593\" srcset=\"https:\/\/agora.xtec.cat\/iesribotiserra\/wp-content\/uploads\/usu1672\/2019\/01\/IMG_20190111_131325.jpg 780w, https:\/\/agora.xtec.cat\/iesribotiserra\/wp-content\/uploads\/usu1672\/2019\/01\/IMG_20190111_131325-300x228.jpg 300w, https:\/\/agora.xtec.cat\/iesribotiserra\/wp-content\/uploads\/usu1672\/2019\/01\/IMG_20190111_131325-768x584.jpg 768w\" sizes=\"auto, (max-width: 780px) 100vw, 780px\" \/><\/a><br \/>\nPer solucionar el problema, Arquimedes havia de calcular la densitat de la corona i mirar si coincidia amb la de l&#8217;or (19,3 g\/cm<sup>3<\/sup>). Mesurar la massa no li va suposar cap dificultat, va utilitzar una balan\u00e7a. El problema era que la corona tenia una forma irregular i no hi havia cap f\u00f3rmula matem\u00e0tica per calcular-ne el volum. Un dia es va adonar que quan submergia un objecte en aigua, el nivell de l&#8217;aigua pujava. L&#8217;increment del volum de l&#8217;aigua coincidia amb el volum de l&#8217;objecte submergit. Aix\u00ed, Arquimedes va poder calcular la densitat de la corona i resoldre el misteri.<\/p>\n<p style=\"text-align: justify;\">Seguint el mateix m\u00e8tode que Arquimedes, els alumnes de 3r B van fer una pr\u00e0ctica de laboratori en la que van calcular la densitat de quatre objectes.<\/p>\n<p><a href=\"https:\/\/photos.app.goo.gl\/Kov6Jg615qFhekRC8\" target=\"_blank\" rel=\"noopener noreferrer\">\u00a0<\/a><a href=\"https:\/\/photos.app.goo.gl\/q5GspjMfb8LM8jF9A\" target=\"_blank\" rel=\"noopener noreferrer\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-566\" src=\"http:\/\/agora.xtec.cat\/iesribotiserra\/wp-content\/uploads\/usu1672\/2018\/01\/google-photos-150x150.png\" alt=\"\" width=\"44\" height=\"44\" srcset=\"https:\/\/agora.xtec.cat\/iesribotiserra\/wp-content\/uploads\/usu1672\/2018\/01\/google-photos-150x150.png 150w, https:\/\/agora.xtec.cat\/iesribotiserra\/wp-content\/uploads\/usu1672\/2018\/01\/google-photos-300x300.png 300w, https:\/\/agora.xtec.cat\/iesribotiserra\/wp-content\/uploads\/usu1672\/2018\/01\/google-photos.png 540w\" sizes=\"auto, (max-width: 44px) 100vw, 44px\" \/>\u00a0<\/a><strong><a href=\"https:\/\/photos.app.goo.gl\/q5GspjMfb8LM8jF9A\" target=\"_blank\" rel=\"noopener noreferrer\">\u00c0lbum de fotos\u00a0<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>L&#8217;alumnat de 3r B ha treballat la llegenda d&#8217;Arquimedes i la corona d&#8217;or. El repte d&#8217;Arquimedes era descobrir si una corona estava feta nom\u00e9s d&#8217;or o si tenia algun altre metall barrejat. Per solucionar el problema, Arquimedes havia de calcular la densitat de la corona i mirar si coincidia amb la de l&#8217;or (19,3 g\/cm3). [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2991,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[111,29],"tags":[220,58],"class_list":["post-2990","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-curs-18-19-eso-i-batxillerat","category-portada","tag-curs-18-19","tag-tallers"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/agora.xtec.cat\/iesribotiserra\/wp-json\/wp\/v2\/posts\/2990","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agora.xtec.cat\/iesribotiserra\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agora.xtec.cat\/iesribotiserra\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/iesribotiserra\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/iesribotiserra\/wp-json\/wp\/v2\/comments?post=2990"}],"version-history":[{"count":2,"href":"https:\/\/agora.xtec.cat\/iesribotiserra\/wp-json\/wp\/v2\/posts\/2990\/revisions"}],"predecessor-version":[{"id":3063,"href":"https:\/\/agora.xtec.cat\/iesribotiserra\/wp-json\/wp\/v2\/posts\/2990\/revisions\/3063"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/iesribotiserra\/wp-json\/wp\/v2\/media\/2991"}],"wp:attachment":[{"href":"https:\/\/agora.xtec.cat\/iesribotiserra\/wp-json\/wp\/v2\/media?parent=2990"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agora.xtec.cat\/iesribotiserra\/wp-json\/wp\/v2\/categories?post=2990"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agora.xtec.cat\/iesribotiserra\/wp-json\/wp\/v2\/tags?post=2990"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}