{"id":20268,"date":"2024-12-16T13:04:36","date_gmt":"2024-12-16T16:04:36","guid":{"rendered":"https:\/\/hangarmma.com.br\/blog\/?post_type=glossary&#038;p=20268"},"modified":"2024-12-16T13:04:46","modified_gmt":"2024-12-16T16:04:46","slug":"lei-de-boyle","status":"publish","type":"glossary","link":"https:\/\/hangarmma.com.br\/blog\/lei-de-boyle\/","title":{"rendered":"Lei de Boyle"},"content":{"rendered":"<pre class=\"wp-block-code\"><code>\n&lt;body&gt;\n    &lt;h1&gt;Lei de Boyle&lt;\/h1&gt;\n    &lt;p&gt;A compressibilidade &#xE9; uma caracter&#xED;stica fundamental dos gases. O cientista ingl&#xEA;s Robert Boyle realizou experimentos que resultaram na formula&#xE7;&#xE3;o da Lei de Boyle, que descreve a rela&#xE7;&#xE3;o entre press&#xE3;o e volume de um g&#xE1;s mantido a temperatura constante. Ele observou que, ao dobrar a press&#xE3;o exercida sobre uma amostra fixa de g&#xE1;s, o volume reduzia-se &#xE0; metade, e quando a press&#xE3;o diminu&#xED;a, o volume aumentava proporcionalmente.&lt;\/p&gt;\n    \n    &lt;h2&gt;Defini&#xE7;&#xE3;o e F&#xF3;rmula&lt;\/h2&gt;\n    &lt;p&gt;A Lei de Boyle estabelece que, para um g&#xE1;s ideal em temperatura constante, o produto da press&#xE3;o (P) e do volume (V) permanece constante:&lt;\/p&gt;\n    &lt;p&gt;&lt;strong&gt;P&lt;sub&gt;1&lt;\/sub&gt; &#xB7; V&lt;sub&gt;1&lt;\/sub&gt; = P&lt;sub&gt;2&lt;\/sub&gt; &#xB7; V&lt;sub&gt;2&lt;\/sub&gt;&lt;\/strong&gt;&lt;\/p&gt;\n    &lt;p&gt;Aqui:&lt;\/p&gt;\n    &lt;ul&gt;\n        &lt;li&gt;&lt;strong&gt;P&lt;sub&gt;1&lt;\/sub&gt;&lt;\/strong&gt; e &lt;strong&gt;V&lt;sub&gt;1&lt;\/sub&gt;&lt;\/strong&gt; s&#xE3;o a press&#xE3;o e o volume iniciais,&lt;\/li&gt;\n        &lt;li&gt;&lt;strong&gt;P&lt;sub&gt;2&lt;\/sub&gt;&lt;\/strong&gt; e &lt;strong&gt;V&lt;sub&gt;2&lt;\/sub&gt;&lt;\/strong&gt; s&#xE3;o a press&#xE3;o e o volume finais.&lt;\/li&gt;\n    &lt;\/ul&gt;\n    \n    &lt;h2&gt;Demonstra&#xE7;&#xE3;o Pr&#xE1;tica&lt;\/h2&gt;\n    &lt;p&gt;A lei pode ser demonstrada aprisionando g&#xE1;s em um cilindro com um pist&#xE3;o m&#xF3;vel. Aplicando for&#xE7;a ao pist&#xE3;o para reduzir o volume, a press&#xE3;o aumenta proporcionalmente. Por exemplo, se o volume de g&#xE1;s &#xE9; reduzido &#xE0; metade, a press&#xE3;o ser&#xE1; dobrada.&lt;\/p&gt;\n    \n    &lt;h2&gt;Exemplo&lt;\/h2&gt;\n    &lt;p&gt;Um g&#xE1;s de 4 p&#xE9;s c&#xFA;bicos, sob press&#xE3;o de 100 psi, expande para um volume de 6 p&#xE9;s c&#xFA;bicos. Usando a f&#xF3;rmula, a nova press&#xE3;o (&lt;strong&gt;P&lt;sub&gt;2&lt;\/sub&gt;&lt;\/strong&gt;) &#xE9; calculada como:&lt;\/p&gt;\n    &lt;p&gt;&lt;strong&gt;P&lt;sub&gt;2&lt;\/sub&gt; = (P&lt;sub&gt;1&lt;\/sub&gt; &#xB7; V&lt;sub&gt;1&lt;\/sub&gt;) \/ V&lt;sub&gt;2&lt;\/sub&gt;&lt;\/strong&gt;&lt;\/p&gt;\n    &lt;p&gt;Substituindo os valores:&lt;\/p&gt;\n    &lt;p&gt;&lt;strong&gt;P&lt;sub&gt;2&lt;\/sub&gt; = (100 &#xB7; 4) \/ 6 = 66,6 psi&lt;\/strong&gt;&lt;\/p&gt;\n    \n    &lt;h2&gt;Gases Ideais e Aplica&#xE7;&#xF5;es na Avia&#xE7;&#xE3;o&lt;\/h2&gt;\n    &lt;p&gt;Um g&#xE1;s que segue perfeitamente a Lei de Boyle &#xE9; chamado de g&#xE1;s ideal. Na pr&#xE1;tica, a densidade de um g&#xE1;s aumenta com a press&#xE3;o, desde que a temperatura permane&#xE7;a constante. A Lei de Boyle tem diversas aplica&#xE7;&#xF5;es na avia&#xE7;&#xE3;o, como:&lt;\/p&gt;\n    &lt;ul&gt;\n        &lt;li&gt;Garrafas de CO&lt;sub&gt;2&lt;\/sub&gt; para inflar coletes salva-vidas e botes.&lt;\/li&gt;\n        &lt;li&gt;Garrafas de oxig&#xEA;nio usadas em altitudes elevadas ou emerg&#xEA;ncias.&lt;\/li&gt;\n        &lt;li&gt;Amortecedores de choque e freios a ar comprimido.&lt;\/li&gt;\n        &lt;li&gt;Sistemas de soldagem com oxig&#xEA;nio e acetileno.&lt;\/li&gt;\n    &lt;\/ul&gt;\n    &lt;p&gt;Essa lei &#xE9; fundamental para entender o comportamento dos gases em diversos sistemas e equipamentos aeron&#xE1;uticos.&lt;\/p&gt;\n&lt;\/body&gt;\n&lt;\/html&gt;\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":12,"featured_media":0,"menu_order":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"glossary-categories":[],"glossary-tags":[],"class_list":["post-20268","glossary","type-glossary","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - 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