{"id":17147,"date":"2024-09-21T19:45:46","date_gmt":"2024-09-21T22:45:46","guid":{"rendered":"https:\/\/xequematenem.com.br\/blog\/?p=17147"},"modified":"2024-09-21T19:45:48","modified_gmt":"2024-09-21T22:45:48","slug":"questao-70-enem-2015","status":"publish","type":"post","link":"https:\/\/xequematenem.com.br\/blog\/questao-70-enem-2015\/","title":{"rendered":"Quest\u00e3o 070 &#8211;\u00a0 ENEM 2015"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Um garoto foi \u00e0 loja comprar um estilingue e encontrou dois modelos: um com borracha mais \u201cdura\u201d e outro com borracha mais \u201cmole\u201d. O garoto concluiu que o mais adequado seria o que proporcionasse maior alcance horizontal, D, para as mesmas condi\u00e7\u00f5es de arremesso, quando submetidos \u00e0 mesma for\u00e7a aplicada. Sabe-se que a constante el\u00e1stica K<sub>d<\/sub> (do estilingue mais \u201cduro\u201d) \u00e9 o dobro da constante el\u00e1stica K<sub>m<\/sub> (do estilingue mais \u201cmole\u201d). A raz\u00e3o entre os alcances D<sub>d<\/sub>\/D<sub>m<\/sub>, referentes aos estilingues com borrachas \u201cdura\u201d e \u201cmole\u201d, respectivamente, \u00e9 igual a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A) 1\/4 .&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B) 1\/2 .&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C) 1.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">D) 2.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">E) 4.<\/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\">Sendo:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"93\" height=\"37\" data-src=\"https:\/\/xequematenem.com.br\/blog\/wp-content\/uploads\/2024\/09\/image-749.png\" alt=\"\" class=\"wp-image-17148 lazyload\" title=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 93px; --smush-placeholder-aspect-ratio: 93\/37;\"><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">temos que a conserva\u00e7\u00e3o da energia mec\u00e2nica do sistema<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"141\" height=\"97\" data-src=\"https:\/\/xequematenem.com.br\/blog\/wp-content\/uploads\/2024\/09\/image-750.png\" alt=\"\" class=\"wp-image-17149 lazyload\" title=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 141px; --smush-placeholder-aspect-ratio: 141\/97;\"><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">sabendo que a for\u00e7a el\u00e1stica \u00e9 dada por:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"101\" height=\"49\" data-src=\"https:\/\/xequematenem.com.br\/blog\/wp-content\/uploads\/2024\/09\/image-751.png\" alt=\"\" class=\"wp-image-17150 lazyload\" title=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 101px; --smush-placeholder-aspect-ratio: 101\/49;\"><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">podemos escrever:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"115\" height=\"60\" data-src=\"https:\/\/xequematenem.com.br\/blog\/wp-content\/uploads\/2024\/09\/image-752.png\" alt=\"\" class=\"wp-image-17151 lazyload\" title=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 115px; --smush-placeholder-aspect-ratio: 115\/60;\"><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">dessa forma:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"154\" height=\"168\" data-src=\"https:\/\/xequematenem.com.br\/blog\/wp-content\/uploads\/2024\/09\/image-753.png\" alt=\"\" class=\"wp-image-17152 lazyload\" title=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 154px; --smush-placeholder-aspect-ratio: 154\/168;\"><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">e sabendo que o alcance \u00e9 dado por:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"162\" height=\"108\" data-src=\"https:\/\/xequematenem.com.br\/blog\/wp-content\/uploads\/2024\/09\/image-754.png\" alt=\"\" class=\"wp-image-17153 lazyload\" title=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 162px; --smush-placeholder-aspect-ratio: 162\/108;\"><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;para a mesma condi\u00e7\u00e3o de for\u00e7a e massa do objeto, o alcance \u00e9 inversamente proporcional a constante el\u00e1stica&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"234\" height=\"122\" data-src=\"https:\/\/xequematenem.com.br\/blog\/wp-content\/uploads\/2024\/09\/image-755.png\" alt=\"\" class=\"wp-image-17154 lazyload\" title=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 234px; --smush-placeholder-aspect-ratio: 234\/122;\"><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Alternativa B<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Um garoto foi \u00e0 loja comprar um estilingue e encontrou dois modelos: um com borracha mais \u201cdura\u201d e outro com borracha mais \u201cmole\u201d. O garoto concluiu que o mais adequado seria o que proporcionasse maior alcance horizontal, D, para as mesmas condi\u00e7\u00f5es de arremesso, quando submetidos \u00e0 mesma for\u00e7a aplicada. Sabe-se que a constante el\u00e1stica [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17,24],"tags":[],"area-do-conhecimento":[116,121],"assunto":[],"class_list":["post-17147","post","type-post","status-publish","format-standard","hentry","category-questoes-do-enem","category-24","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\/17147","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=17147"}],"version-history":[{"count":1,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/posts\/17147\/revisions"}],"predecessor-version":[{"id":17155,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/posts\/17147\/revisions\/17155"}],"wp:attachment":[{"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/media?parent=17147"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/categories?post=17147"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/tags?post=17147"},{"taxonomy":"area-do-conhecimento","embeddable":true,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/area-do-conhecimento?post=17147"},{"taxonomy":"assunto","embeddable":true,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/assunto?post=17147"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}