{"id":15887,"date":"2024-09-17T14:02:43","date_gmt":"2024-09-17T17:02:43","guid":{"rendered":"https:\/\/xequematenem.com.br\/blog\/?p=15887"},"modified":"2024-09-19T10:10:04","modified_gmt":"2024-09-19T13:10:04","slug":"questao-102-enem-ppl-2023","status":"publish","type":"post","link":"https:\/\/xequematenem.com.br\/blog\/questao-102-enem-ppl-2023\/","title":{"rendered":"Quest\u00e3o 102 &#8211; ENEM PPL 2023"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Um fabricante de eletrodom\u00e9sticos desenvolveu um compartimento refrigerador inovador que consegue resfriar, em apenas 7 minutos, duas latas de refrigerante (350 mL cada), com densidade igual a 1,0 g\/mL. A refrigera\u00e7\u00e3o do l\u00edquido consome 21% da pot\u00eancia do sistema quando o refrigerante tem sua temperatura diminu\u00edda em 15 \u00b0C. Considere o calor espec\u00edfico do refrigerante igual a 1,0 cal\/(g\u00b0C) e 1 cal = 4,2 J. A pot\u00eancia total, em watt, desse dispositivo refrigerador \u00e9, aproximadamente,&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A) 105.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B) 120.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C) 315.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">D) 500.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">E) 1 500.&nbsp;<\/p>\n\n\n\n<p class=\"has-text-align-center has-large-font-size wp-block-paragraph\"><strong>Solu\u00e7\u00e3o<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sabendo que a pot\u00eancia (P) \u00e9 dada por:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"114\" height=\"43\" data-src=\"https:\/\/xequematenem.com.br\/blog\/wp-content\/uploads\/2024\/09\/image-263.png\" alt=\"\" class=\"wp-image-15888 lazyload\" title=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 114px; --smush-placeholder-aspect-ratio: 114\/43;\"><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Onde Q \u00e9 a capacidade t\u00e9rmica, e t \u00e9 o tempo de refrigera\u00e7\u00e3o, e sabendo que a capacidade t\u00e9rmica \u00e9 dada por:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"96\" height=\"39\" data-src=\"https:\/\/xequematenem.com.br\/blog\/wp-content\/uploads\/2024\/09\/image-264.png\" alt=\"\" class=\"wp-image-15889 lazyload\" title=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 96px; --smush-placeholder-aspect-ratio: 96\/39;\"><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">em que m \u00e9 a massa, c \u00e9 o calor espec\u00edfico e T \u00e9 a varia\u00e7\u00e3o de temperatura. Dessa forma:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"316\" height=\"126\" data-src=\"https:\/\/xequematenem.com.br\/blog\/wp-content\/uploads\/2024\/09\/image-265.png\" alt=\"\" class=\"wp-image-15890 lazyload\" title=\"\" data-srcset=\"https:\/\/xequematenem.com.br\/blog\/wp-content\/uploads\/2024\/09\/image-265.png 316w, https:\/\/xequematenem.com.br\/blog\/wp-content\/uploads\/2024\/09\/image-265-300x120.png 300w\" data-sizes=\"(max-width: 316px) 100vw, 316px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 316px; --smush-placeholder-aspect-ratio: 316\/126;\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Por\u00e9m, 105J representam 21% da potencia do refrigerador, dessa maneira, utilizando a regra de tr\u00eas para encontrar a pot\u00eancia total<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"147\" height=\"187\" data-src=\"https:\/\/xequematenem.com.br\/blog\/wp-content\/uploads\/2024\/09\/image-266.png\" alt=\"\" class=\"wp-image-15891 lazyload\" title=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 147px; --smush-placeholder-aspect-ratio: 147\/187;\"><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Alternativa D<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Um fabricante de eletrodom\u00e9sticos desenvolveu um compartimento refrigerador inovador que consegue resfriar, em apenas 7 minutos, duas latas de refrigerante (350 mL cada), com densidade igual a 1,0 g\/mL. A refrigera\u00e7\u00e3o do l\u00edquido consome 21% da pot\u00eancia do sistema quando o refrigerante tem sua temperatura diminu\u00edda em 15 \u00b0C. Considere o calor espec\u00edfico do refrigerante [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[87,102],"tags":[],"area-do-conhecimento":[116,121],"assunto":[],"class_list":["post-15887","post","type-post","status-publish","format-standard","hentry","category-questoes-ppl","category-2023-questoes-ppl","area-do-conhecimento-ciencias-da-natureza-e-suas-tecnologias","area-do-conhecimento-fisica"],"_links":{"self":[{"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/posts\/15887","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/comments?post=15887"}],"version-history":[{"count":2,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/posts\/15887\/revisions"}],"predecessor-version":[{"id":16176,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/posts\/15887\/revisions\/16176"}],"wp:attachment":[{"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/media?parent=15887"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/categories?post=15887"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/tags?post=15887"},{"taxonomy":"area-do-conhecimento","embeddable":true,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/area-do-conhecimento?post=15887"},{"taxonomy":"assunto","embeddable":true,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/assunto?post=15887"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}