{"id":16720,"date":"2024-09-20T12:27:02","date_gmt":"2024-09-20T15:27:02","guid":{"rendered":"https:\/\/xequematenem.com.br\/blog\/?p=16720"},"modified":"2024-09-20T12:27:04","modified_gmt":"2024-09-20T15:27:04","slug":"questao-131-enem-2019","status":"publish","type":"post","link":"https:\/\/xequematenem.com.br\/blog\/questao-131-enem-2019\/","title":{"rendered":"Quest\u00e3o 131- ENEM 2019"},"content":{"rendered":"\n<p>A agricultura de precis\u00e3o re\u00fane t\u00e9cnicas agr\u00edcolas que consideram particularidades locais do solo ou lavoura a fim de otimizar o uso de recursos. Uma das formas de adquirir informa\u00e7\u00f5es sobre essas particularidades \u00e9 a fotografia a\u00e9rea de baixa altitude realizada por um ve\u00edculo a\u00e9reo n\u00e3o tripulado (vant). Na fase de aquisi\u00e7\u00e3o \u00e9 importante determinar o n\u00edvel de sobreposi\u00e7\u00e3o entre as fotografias. A figura ilustra como uma sequ\u00eancia de imagens \u00e9 coletada por um vant e como s\u00e3o formadas as sobreposi\u00e7\u00f5es frontais.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"335\" height=\"236\" src=\"https:\/\/xequematenem.com.br\/blog\/wp-content\/uploads\/2024\/09\/image-528.png\" alt=\"\" class=\"wp-image-16721\" title=\"\" srcset=\"https:\/\/xequematenem.com.br\/blog\/wp-content\/uploads\/2024\/09\/image-528.png 335w, https:\/\/xequematenem.com.br\/blog\/wp-content\/uploads\/2024\/09\/image-528-300x211.png 300w\" sizes=\"(max-width: 335px) 100vw, 335px\" \/><\/figure>\n\n\n\n<p>O operador do vant recebe uma encomenda na qual as imagens devem ter uma sobreposi\u00e7\u00e3o frontal de 20% em um terreno plano. Para realizar a aquisi\u00e7\u00e3o das imagens, seleciona uma altitude H fixa de voo de 1 000 m, a uma velocidade constante de 50 m s<sup>-1<\/sup>. A abertura da c\u00e2mera fotogr\u00e1fica do vant \u00e9 de 90\u00b0. Considere tg(45\u00b0) = 1.&nbsp;<\/p>\n\n\n\n<p>Natural Resources Canada. Concepts of Aerial Photography. Dispon\u00edvel em: www.nrcan.gc.ca. Acesso em: 26 abr. 2019 (adaptado).&nbsp;<\/p>\n\n\n\n<p>Com que intervalo de tempo o operador deve adquirir duas imagens consecutivas?<\/p>\n\n\n\n<p>A) 40 segundos.&nbsp;<\/p>\n\n\n\n<p>B) 32 segundos.&nbsp;<\/p>\n\n\n\n<p>C) 28 segundos.&nbsp;<\/p>\n\n\n\n<p>D) 16 segundos.&nbsp;<\/p>\n\n\n\n<p>E) 8 segundos.<\/p>\n\n\n\n<p class=\"has-text-align-center has-large-font-size\"><strong>Solu\u00e7\u00e3o<\/strong><\/p>\n\n\n\n<p>Precisamos determinar o intervalo de tempo entre duas fotos consecutivas. Vamos considerar que, durante esse intervalo, o avi\u00e3o com velocidade<em> <\/em><em>v<\/em><em> <\/em>se desloca uma dist\u00e2ncia \u0394s<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"129\" height=\"91\" data-src=\"https:\/\/xequematenem.com.br\/blog\/wp-content\/uploads\/2024\/09\/image-529.png\" alt=\"\" class=\"wp-image-16722 lazyload\" title=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 129px; --smush-placeholder-aspect-ratio: 129\/91;\"><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" data-src=\"https:\/\/lh7-rt.googleusercontent.com\/docsz\/AD_4nXdlBxa_Ek4QkVC6aHYVNGuTEuKss3YMU47QFF5lWvDu8W3gzd1vxFwQHMCqjtOWeG_vukWtrKBqEAkc9g12NEb0tTtNKbHUVwico2nZ07t5WRDdpR3v-zK5M_CKpc3mt-PHf9ep1AkKUQuX6jPB_lLLKO-X?key=cZZoT8Y6vO0sxb39wzql9g\" alt=\"\" title=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\"><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"121\" height=\"26\" data-src=\"https:\/\/xequematenem.com.br\/blog\/wp-content\/uploads\/2024\/09\/image-530.png\" alt=\"\" class=\"wp-image-16723 lazyload\" title=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 121px; --smush-placeholder-aspect-ratio: 121\/26;\"><\/figure>\n\n\n\n<p>Temos que&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"143\" height=\"31\" data-src=\"https:\/\/xequematenem.com.br\/blog\/wp-content\/uploads\/2024\/09\/image-531.png\" alt=\"\" class=\"wp-image-16724 lazyload\" title=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 143px; --smush-placeholder-aspect-ratio: 143\/31;\"><\/figure>\n\n\n\n<p>logo<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"178\" height=\"27\" data-src=\"https:\/\/xequematenem.com.br\/blog\/wp-content\/uploads\/2024\/09\/image-532.png\" alt=\"\" class=\"wp-image-16725 lazyload\" title=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 178px; --smush-placeholder-aspect-ratio: 178\/27;\"><\/figure>\n\n\n\n<p>Tamb\u00e9m:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"143\" height=\"93\" data-src=\"https:\/\/xequematenem.com.br\/blog\/wp-content\/uploads\/2024\/09\/image-534.png\" alt=\"\" class=\"wp-image-16727 lazyload\" title=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 143px; --smush-placeholder-aspect-ratio: 143\/93;\"><\/figure>\n\n\n\n<p>Em que Tg(45\u00b0) =1<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"240\" height=\"270\" data-src=\"https:\/\/xequematenem.com.br\/blog\/wp-content\/uploads\/2024\/09\/image-533.png\" alt=\"\" class=\"wp-image-16726 lazyload\" title=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 240px; --smush-placeholder-aspect-ratio: 240\/270;\"><\/figure>\n\n\n\n<p><strong>Alternativa B<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>A agricultura de precis\u00e3o re\u00fane t\u00e9cnicas agr\u00edcolas que consideram particularidades locais do solo ou lavoura a fim de otimizar o uso de recursos. Uma das formas de adquirir informa\u00e7\u00f5es sobre essas particularidades \u00e9 a fotografia a\u00e9rea de baixa altitude realizada por um ve\u00edculo a\u00e9reo n\u00e3o tripulado (vant). Na fase de aquisi\u00e7\u00e3o \u00e9 importante determinar o [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":16721,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17,19],"tags":[],"area-do-conhecimento":[116,121],"assunto":[],"class_list":["post-16720","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-questoes-do-enem","category-19","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\/16720","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=16720"}],"version-history":[{"count":1,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/posts\/16720\/revisions"}],"predecessor-version":[{"id":16728,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/posts\/16720\/revisions\/16728"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/media\/16721"}],"wp:attachment":[{"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/media?parent=16720"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/categories?post=16720"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/tags?post=16720"},{"taxonomy":"area-do-conhecimento","embeddable":true,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/area-do-conhecimento?post=16720"},{"taxonomy":"assunto","embeddable":true,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/assunto?post=16720"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}