{"id":314,"date":"2013-10-14T08:10:36","date_gmt":"2013-10-14T08:10:36","guid":{"rendered":"https:\/\/blogs.ua.es\/ffic\/?p=314"},"modified":"2013-10-23T12:31:46","modified_gmt":"2013-10-23T12:31:46","slug":"termodinamica-ii","status":"publish","type":"post","link":"https:\/\/blogs.ua.es\/ffic\/2013\/10\/14\/termodinamica-ii\/","title":{"rendered":"Tema 3. Termodin\u00e0mica (II)"},"content":{"rendered":"<p style=\"text-align: justify\">Aquesta segona sessi\u00f3 es dedicar\u00e0 a la definici\u00f3 dels conceptes de <strong>sistemes termodin\u00e0mics<\/strong>, equaci\u00f3 i variables d&#8217;estat, processos termodin\u00e0mics i formulaci\u00f3 del <strong>primer principi de la Termodin\u00e0mica<\/strong>. Els sistemes termodin\u00e0mics poden intercanviar mat\u00e8ria i energia (no nom\u00e9s calor sin\u00f3 tamb\u00e9 treball) des d&#8217;aquests cap l&#8217;exterior i al rev\u00e9s. Tractarem el treball termodin\u00e0mic com a transfer\u00e8ncia d&#8217;energia entre un sistema i el seu entorn i es desenvolupar\u00e0 a partir de la definici\u00f3 de treball mec\u00e0nic. \u00c9s a dir, com el treball que realitza la for\u00e7a deguda a la pressi\u00f3 d&#8217;un fluid sobre un \u00e8mbol m\u00f2bil.<\/p>\n<p style=\"text-align: justify\">Tenint en compte les definicions de l&#8217;equaci\u00f3 i variables d&#8217;estat es formula el primer principi de la Termodin\u00e0mica que estableix que en tot proc\u00e9s en qu\u00e8 se cedeix calor al sistema i aquest fa un treball, l&#8217;energia total transferida al sistema \u00e9s igual al canvi en la seua energia interna. A la vegada, aquest principi representa el principi de conservaci\u00f3 de l&#8217;energia que posa de manifest els resultats de totes les experi\u00e8ncies desenvolupades per a relacionar el treball realitzat per o sobre un sistema termodin\u00e0mic, el calor absorbit o cedit i l&#8217;energia interna del propi sistema. Per a acabar aquesta sessi\u00f3, s&#8217;estudiaran les diferents transformacions termodin\u00e0miques reversibles per a un gas perfecte o ideal. A partir de les capacitats molars a pressi\u00f3 i volum constant per a gasos ideals, s&#8217;establir\u00e0 la <strong>relaci\u00f3 de Mayer<\/strong> i s&#8217;analitzaran les diferents transformacions termodin\u00e0miques per a processos reversibles en gasos ideals.<\/p>\n<p style=\"text-align: justify\">El Professor del <strong>MIT<\/strong> (<a href=\"http:\/\/www.mit.edu\/\">Massachussetts Institute of Technology<\/a>) t\u00e9 un curs de f\u00edsica sencer enregistrat, l\u00f2gicament en angl\u00e9s, i podeu escoltar en el seg\u00fcent v\u00eddeo la sessi\u00f3 corresponent a la llei de gasos ideals.<\/p>\n<p><code>[kml_flashembed movie=\"http:\/\/www.youtube.com\/v\/5uHSl7A5GEk\" width=\"480\" height=\"360\" wmode=\"transparent\" \/]<\/code><\/p>\n<p style=\"text-align: justify\">La versi\u00f3 en castell\u00e0 d&#8217;aquesta sessi\u00f3 i la bibliografia es poden consultar <a href=\"https:\/\/blogs.ua.es\/ffic\/programa\/tema-3\/\">ac\u00ed<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Aquesta segona sessi\u00f3 es dedicar\u00e0 a la definici\u00f3 dels conceptes de sistemes termodin\u00e0mics, equaci\u00f3 i variables d&#8217;estat, processos termodin\u00e0mics i formulaci\u00f3 del primer principi de la Termodin\u00e0mica. Els sistemes termodin\u00e0mics poden intercanviar mat\u00e8ria i energia (no nom\u00e9s calor sin\u00f3 tamb\u00e9 &hellip; <a href=\"https:\/\/blogs.ua.es\/ffic\/2013\/10\/14\/termodinamica-ii\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2285,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9319,1366],"tags":[9330,1580705],"class_list":["post-314","post","type-post","status-publish","format-standard","hentry","category-asignatura-2","category-temas","tag-asignatura-3","tag-temas"],"_links":{"self":[{"href":"https:\/\/blogs.ua.es\/ffic\/wp-json\/wp\/v2\/posts\/314","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.ua.es\/ffic\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.ua.es\/ffic\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.ua.es\/ffic\/wp-json\/wp\/v2\/users\/2285"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.ua.es\/ffic\/wp-json\/wp\/v2\/comments?post=314"}],"version-history":[{"count":9,"href":"https:\/\/blogs.ua.es\/ffic\/wp-json\/wp\/v2\/posts\/314\/revisions"}],"predecessor-version":[{"id":348,"href":"https:\/\/blogs.ua.es\/ffic\/wp-json\/wp\/v2\/posts\/314\/revisions\/348"}],"wp:attachment":[{"href":"https:\/\/blogs.ua.es\/ffic\/wp-json\/wp\/v2\/media?parent=314"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.ua.es\/ffic\/wp-json\/wp\/v2\/categories?post=314"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.ua.es\/ffic\/wp-json\/wp\/v2\/tags?post=314"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}