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A água entra em ebulição a 100 ºC em uma cidade localizada ao nível do mar. Nessa mesma cidade, em um equipamento com pressurização interna, a água deve entrar em ebulição em uma temperatura

","status","pending_classification","hasRelatedVideo","relatedVideos",[109],{"_110":111,"_129":130,"_52":145,"_164":165,"_182":146},"content",{"_44":112,"_56":113,"_114":-5,"_115":116,"_117":118,"_119":-5,"_46":120,"_123":124,"_125":124,"_126":-5,"_127":128},"162087be-594f-460e-bbdd-a339ac2f10ad","Calor Latente - Parte 1","description","content_type_id","1051eee7-c62e-4b2c-9900-77a29fcec080","resource_id","f2b62fc2-7079-40e7-a5b5-c4a9769b205d","user_id",{"_121":122},"external_id","3659","created_at","2025-08-20T12:27:41.608438+00:00","updated_at","content_group_id","slug","calor-latente-parte-1","prometheusData",{"_131":132,"_138":139,"_140":141,"_142":143,"_28":144},"provider",{"_44":133,"_134":135,"_136":137},"06f120be-2194-4548-8336-7ba44ffbae14","key","grupo_q_proteus","kind","proteus","reference","bf8aacba-3de9-4b10-961c-47ada80dfe8c","state","completed","thumbnail_url","https://proteus.grupoq.io/videos/bf8aacba-3de9-4b10-961c-47ada80dfe8c/thumbnailsthumb.0000000.jpg","https://proteus.grupoq.io/videos/bf8aacba-3de9-4b10-961c-47ada80dfe8c/levels.m3u8",[146],{"_44":147,"_56":148,"_58":149,"_150":151,"_152":153,"_123":154,"_125":154,"_46":155,"_127":149,"_162":163},"96193fa0-9495-45b2-81cc-b547604354af","Física Térmica - Termologia","fisica-termica-termologia","tag_group_id","c1ce2cf2-b217-4cc7-8182-81c56bd3522d","parent_id","c8ab2a95-fd84-4d6f-ade0-835d34ba00f9","2025-04-29T03:44:27.560682+00:00",{"_156":157,"_158":159,"_160":161},"childrenCount",10,"content_count",0,"question_count",8575,"children",[],"video",{"_44":118,"_13":113,"_114":-5,"_166":167,"_168":169,"_28":-5,"_170":-5,"_131":169,"_171":172,"_142":-5,"_173":-5,"_174":-5,"_175":-5,"_176":-5,"_46":177,"_178":159,"_179":-5,"_104":180,"_123":181,"_125":181},"duration",17,"source_type","prometheus","iframe_url","provider_video_id","748a4adb-ad8f-4c5f-88a9-bc522d3b4246","format","quality","file_path","file_size",{"_121":122},"views_count","last_played_at","draft","2025-08-19T11:56:22.11908+00:00","tag","similarQuestions",[185,216,234],{"_40":186,"_42":43,"_44":187,"_82":188,"_101":204,"_102":205,"_52":206},"112831da-be9c-458e-94cb-e8292d0dba12","3c0b9441-b878-4896-8bac-fa4ca61e3f13",[189,192,195,198,201],{"_44":190,"_86":87,"_88":191},"265bd71a-6749-41f5-b291-67efd646ca64","y'' + 2y' - 3y = 0",{"_44":193,"_86":91,"_88":194},"6d3c3a1d-8e80-4ff3-b97a-d5b5bca91940","6y'' - y' - y = 0",{"_44":196,"_86":95,"_88":197},"4168ac67-64fd-46ed-a69c-a01dbfcde7ea","y'' - 2y' + y = 0",{"_44":199,"_86":99,"_88":200},"cc7bc8df-6995-4264-ac5a-32ea9b4ed7db","9y'' + 6y' + y = 0",{"_44":186,"_86":202,"_88":203},"E","y'' - 2y' + 6y = 0","Somente em y''−2y'+6y=0 o polinômio característico r²−2r+6=0 tem Δ<0, gerando raízes complexas conjugadas (1±i√5) e, portanto, solução em termos de exponencial modulando seno e cosseno. Nos demais itens (a–d) o discriminante é ≥0, produzindo raízes reais (distintas ou repetidas).","

Resolva as seguintes EDOs determinando a solução geral e, quando houver condições iniciais do PVI, a solução particular.

(a) y'' + 2y' - 3y = 0

(b) 6y'' - y' - y = 0

(d) 9y'' + 6y' + y = 0

(e) y'' - 2y' + 6y = 0

(f) 4y'' + 9y = 0

(g) 6y'' - 5y' + y = 0; \\, y(0) = 4; \\, y'(0) = 0

(h) y'' + 4y' + 4y = 0; \\, y(-1) = 2; \\, y'(-1) = 1

(i) y'' + y = 0; \\, y\bigg(\\frac{\\pi}{3}\\bigg) = 2; \\, y'\\bigg(\\frac{\\pi}{3}\\bigg) = -4

(j) y'' - 2y' - 3y = 3e^{2t}

(k) y'' + 9y = t^2 e^{3t} + 6

(l) 2y'' + 3y' + y = t^2 + 3 \\sin(t)

(m) y'' + y' - 2y = 2t; \\, y(0) = 0; \\, y'(0) = 1

(n) y'' - 2y' + y = te^t + 4; \\, y(0) = 1; \\, y'(0) = 1

(o) y'' + 4y = 3 \\sin(2t); \\, y(0) = 2; \\, y'(0) = -1

",[207],{"_44":208,"_56":209,"_58":210,"_150":151,"_152":211,"_123":212,"_125":212,"_46":213,"_127":210},"6516bbbd-f2a3-4710-8382-702240b17836","Mecânica na Engenharia de Petróleo","mecanica-na-engenharia-de-petroleo","b787e438-0ab3-454c-ab43-5d3d14c2720d","2025-04-29T03:44:35.328997+00:00",{"_156":214,"_158":159,"_160":215},4,12302,{"_40":217,"_42":43,"_44":218,"_82":219,"_101":231,"_102":232,"_52":233},"6831a9b9-c9a4-4a76-bd7a-2ce98bfea875","93a32dd4-5fc6-4ccb-a76f-4724bf113742",[220,223,226,228],{"_44":221,"_86":87,"_88":222},"13e3f476-a0a5-421f-b47e-0969e8e9a7e0","

Verdadeiro, verdadeiro, falso

",{"_44":224,"_86":91,"_88":225},"c9a20855-d84b-4860-8b35-9784818282cf","

Falso, verdadeiro, verdadeiro

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Verdadeiro, falso, verdadeiro

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Falso, falso, falso

","85,5 % decomposto → 14,5 % restante.\nN/N0 = 0,145 ⇒ t = ln(1/0,145)/(ln2/5730) ≈ 1,6×10⁴ anos.\nItens prováveis: (1) resta 14,5 % do C-14 (V); (2) idade ≈ 1,2×10⁴ anos ou 3 meias-vidas (F); (3) t½ do C-14 = 5730 anos (V). Sequência: V-F-V, correspondendo à alternativa c.","

Qual é a idade da madeira na qual 85,5\\% do C-14 se decompos?

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a) ????3 de ????4????5
b) ????2 de ????2????????2
c) ????1 de 2????????1
d) ????1 de 2????2????",[207],[207,256,263,273,280,287,288,296,302,307,313,320],{"_44":257,"_56":64,"_58":65,"_150":151,"_152":258,"_123":154,"_125":154,"_46":259,"_127":262},"6b6faf95-0e3a-4f58-abc8-e1444c48041d","92339f4f-ed20-4f4c-ad85-0c3de7e04ae0",{"_156":260,"_158":159,"_160":261},2,11846,"termodinamica-3",{"_44":264,"_56":265,"_58":266,"_150":151,"_152":267,"_123":268,"_125":268,"_46":269,"_127":272},"861ad829-750d-4a44-9569-2f18b430b4df","Engenharia Mecatrônica","engenharia-mecatronica","eb9315c5-bd04-4116-aa46-02c4fde320c0","2025-04-29T02:19:12.828432+00:00",{"_156":270,"_158":159,"_160":271},5,30614,"engenharia-mecatronica-1",{"_44":274,"_56":275,"_58":276,"_150":151,"_152":264,"_123":212,"_125":212,"_46":277,"_127":279},"88fe96b3-2a17-4198-90d5-ddda3d6f5d45","Mecânica","mecanica",{"_156":270,"_158":159,"_160":278},25741,"mecanica-3",{"_44":258,"_56":281,"_58":282,"_150":151,"_152":267,"_123":268,"_125":268,"_46":283,"_127":286},"Engenharia Mecânica","engenharia-mecanica",{"_156":284,"_158":159,"_160":285},11,36318,"engenharia-mecanica-2",{"_44":147,"_56":148,"_58":149,"_150":151,"_152":153,"_123":154,"_125":154,"_46":155,"_127":149},{"_44":289,"_56":290,"_58":291,"_150":151,"_152":-5,"_123":292,"_125":292,"_46":293,"_127":291},"9772e958-72c6-4499-ad47-877cf94d670d","Exatas","exatas","2025-04-29T01:56:45.284172+00:00",{"_156":294,"_158":159,"_160":295},18,135489,{"_44":297,"_56":64,"_58":65,"_150":151,"_152":208,"_123":298,"_125":298,"_46":299,"_127":301},"b21374de-aae5-4a4a-9bf3-0420e731797e","2025-04-29T04:00:14.680867+00:00",{"_156":159,"_158":159,"_160":300},8597,"termodinamica-5",{"_44":211,"_56":303,"_58":304,"_150":151,"_152":267,"_123":268,"_125":268,"_46":305,"_127":306},"Engenharia de Petróleo","engenharia-de-petroleo",{"_156":270,"_158":159,"_160":215},"engenharia-de-petroleo-1",{"_44":153,"_56":308,"_58":309,"_150":151,"_152":289,"_123":268,"_125":268,"_46":310,"_127":312},"Física","fisica",{"_156":284,"_158":159,"_160":311},13777,"fisica-4",{"_44":267,"_56":314,"_58":315,"_150":151,"_152":-5,"_123":316,"_125":316,"_46":317,"_127":315},"Engenharia","engenharia","2025-04-29T01:55:38.635246+00:00",{"_156":318,"_158":159,"_160":319},29,351586,{"_44":321,"_56":64,"_58":65,"_150":151,"_152":274,"_123":322,"_125":322,"_46":323,"_127":324},"f5967cbe-d751-4b40-81f2-04eb5dead2a9","2025-04-29T04:00:13.215003+00:00",{"_156":159,"_158":159,"_160":300},"termodinamica-4","tagsTree",[327,331],{"_44":289,"_56":290,"_58":291,"_150":151,"_152":-5,"_123":292,"_125":292,"_46":293,"_127":291,"_162":328},[329],{"_44":153,"_56":308,"_58":309,"_150":151,"_152":289,"_123":268,"_125":268,"_46":310,"_127":312,"_162":330},[146],{"_44":267,"_56":314,"_58":315,"_150":151,"_152":-5,"_123":316,"_125":316,"_46":317,"_127":315,"_162":332},[333,339,343],{"_44":264,"_56":265,"_58":266,"_150":151,"_152":267,"_123":268,"_125":268,"_46":269,"_127":272,"_162":334},[335],{"_44":274,"_56":275,"_58":276,"_150":151,"_152":264,"_123":212,"_125":212,"_46":277,"_127":279,"_162":336},[337],{"_44":321,"_56":64,"_58":65,"_150":151,"_152":274,"_123":322,"_125":322,"_46":323,"_127":324,"_162":338},[],{"_44":258,"_56":281,"_58":282,"_150":151,"_152":267,"_123":268,"_125":268,"_46":283,"_127":286,"_162":340},[341],{"_44":257,"_56":64,"_58":65,"_150":151,"_152":258,"_123":154,"_125":154,"_46":259,"_127":262,"_162":342},[],{"_44":211,"_56":303,"_58":304,"_150":151,"_152":267,"_123":268,"_125":268,"_46":305,"_127":306,"_162":344},[345],{"_44":208,"_56":209,"_58":210,"_150":151,"_152":211,"_123":212,"_125":212,"_46":213,"_127":210,"_162":346},[347],{"_44":297,"_56":64,"_58":65,"_150":151,"_152":208,"_123":298,"_125":298,"_46":299,"_127":301,"_162":348},[],"videoDislikes",{},"videoLikes",{},"actionData","errors"]

Comentários