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Dentre as alternativas, assinale aquela que corresponde a unidade de medida da grandeza força no sistema métrico adotado pelo Brasil.

","status","pending_classification","hasRelatedVideo","relatedVideos",[108],{"_109":110,"_128":129,"_50":144,"_170":171,"_188":189},"content",{"_43":111,"_56":112,"_113":-5,"_114":115,"_116":117,"_118":-5,"_45":119,"_122":123,"_124":123,"_125":-5,"_126":127},"468e3e62-35e0-47be-a15f-68dd43bb32bb","Óptica Geométrica - Parte 1","description","content_type_id","1051eee7-c62e-4b2c-9900-77a29fcec080","resource_id","fa6aaf42-4cc4-4d76-8915-7a67081f7e9a","user_id",{"_120":121},"external_id","4963","created_at","2025-08-20T12:27:41.608438+00:00","updated_at","content_group_id","slug","optica-geometrica-parte-1","prometheusData",{"_130":131,"_137":138,"_139":140,"_141":142,"_28":143},"provider",{"_43":132,"_133":134,"_135":136},"06f120be-2194-4548-8336-7ba44ffbae14","key","grupo_q_proteus","kind","proteus","reference","d80487a0-0f98-42c8-99bb-551165ba3068","state","completed","thumbnail_url","https://proteus.grupoq.io/videos/d80487a0-0f98-42c8-99bb-551165ba3068/thumbnailsthumb.0000000.jpg","https://proteus.grupoq.io/videos/d80487a0-0f98-42c8-99bb-551165ba3068/levels.m3u8",[145],{"_43":146,"_56":147,"_58":148,"_149":150,"_151":-5,"_122":152,"_124":152,"_45":153,"_126":148,"_160":161},"9772e958-72c6-4499-ad47-877cf94d670d","Exatas","exatas","tag_group_id","c1ce2cf2-b217-4cc7-8182-81c56bd3522d","parent_id","2025-04-29T01:56:45.284172+00:00",{"_154":155,"_156":157,"_158":159},"childrenCount",18,"content_count",0,"question_count",135489,"children",[162],{"_43":163,"_56":57,"_58":59,"_149":150,"_151":146,"_122":164,"_124":164,"_45":165,"_126":168,"_160":169},"ca6fee0e-79c6-4f1c-b500-ee081a071949","2025-04-29T02:19:12.828432+00:00",{"_154":166,"_156":157,"_158":167},10,19948,"mecanica-2",[],"video",{"_43":117,"_13":112,"_113":-5,"_172":173,"_174":175,"_28":-5,"_176":-5,"_130":175,"_177":178,"_141":-5,"_179":-5,"_180":-5,"_181":-5,"_182":-5,"_45":183,"_184":157,"_185":-5,"_103":186,"_122":187,"_124":187},"duration",20,"source_type","prometheus","iframe_url","provider_video_id","1cd3d633-d690-4f4b-9995-9b0e44994e35","format","quality","file_path","file_size",{"_120":121},"views_count","last_played_at","draft","2025-08-19T11:56:20.758718+00:00","tag",{"_43":146,"_56":147,"_58":148,"_149":150,"_151":-5,"_122":152,"_124":152,"_45":190,"_126":148,"_160":191},{"_154":155,"_156":157,"_158":159},[192],{"_43":163,"_56":57,"_58":59,"_149":150,"_151":146,"_122":164,"_124":164,"_45":193,"_126":168,"_160":194},{"_154":166,"_156":157,"_158":167},[],"similarQuestions",[197,227,247],{"_40":198,"_42":41,"_43":199,"_76":200,"_100":215,"_101":216,"_50":217},"112831da-be9c-458e-94cb-e8292d0dba12","3c0b9441-b878-4896-8bac-fa4ca61e3f13",[201,204,207,210,213],{"_43":202,"_80":81,"_82":203},"265bd71a-6749-41f5-b291-67efd646ca64","y'' + 2y' - 3y = 0",{"_43":205,"_80":86,"_82":206},"6d3c3a1d-8e80-4ff3-b97a-d5b5bca91940","6y'' - y' - y = 0",{"_43":208,"_80":90,"_82":209},"4168ac67-64fd-46ed-a69c-a01dbfcde7ea","y'' - 2y' + y = 0",{"_43":211,"_80":94,"_82":212},"cc7bc8df-6995-4264-ac5a-32ea9b4ed7db","9y'' + 6y' + y = 0",{"_43":198,"_80":98,"_82":214},"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

",[218],{"_43":219,"_56":220,"_58":221,"_149":150,"_151":222,"_122":164,"_124":164,"_45":223,"_126":226},"861ad829-750d-4a44-9569-2f18b430b4df","Engenharia Mecatrônica","engenharia-mecatronica","eb9315c5-bd04-4116-aa46-02c4fde320c0",{"_154":224,"_156":157,"_158":225},5,30614,"engenharia-mecatronica-1",{"_40":228,"_42":41,"_43":229,"_76":230,"_100":242,"_101":243,"_50":244},"6831a9b9-c9a4-4a76-bd7a-2ce98bfea875","93a32dd4-5fc6-4ccb-a76f-4724bf113742",[231,234,237,239],{"_43":232,"_80":81,"_82":233},"13e3f476-a0a5-421f-b47e-0969e8e9a7e0","

Verdadeiro, verdadeiro, falso

",{"_43":235,"_80":86,"_82":236},"c9a20855-d84b-4860-8b35-9784818282cf","

Falso, verdadeiro, verdadeiro

",{"_43":228,"_80":90,"_82":238},"

Verdadeiro, falso, verdadeiro

",{"_43":240,"_80":94,"_82":241},"3c98539b-1af9-4d44-aecd-c266754a2075","

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?

",[245],{"_43":219,"_56":220,"_58":221,"_149":150,"_151":222,"_122":164,"_124":164,"_45":246,"_126":226},{"_154":224,"_156":157,"_158":225},{"_40":248,"_42":41,"_43":249,"_76":250,"_100":265,"_101":266,"_50":267},"3ce109b1-6cdb-4b4d-8816-a6af4d74bed0","c478a46c-46a8-4942-ae14-2e79def3dda2",[251,254,257,259,262],{"_43":252,"_80":81,"_82":253},"a5a16a42-3e58-4c76-80f2-c291aa2d8e49","Sim",{"_43":255,"_80":86,"_82":256},"5e6d0254-696c-4da0-b572-82e3a19f433e","Não",{"_43":248,"_80":90,"_82":258},"Indeterminado",{"_43":260,"_80":94,"_82":261},"35403f68-a880-429d-97f4-db507c58de38","Todos",{"_43":263,"_80":98,"_82":264},"2e06d948-d37e-4350-afc7-ced04941bcaf","Nenhum","Os polinômios e números fornecidos estão corrompidos (símbolos “????”), impossibilitando aplicar Ruffini e concluir se são raízes. Sem dados completos, o problema é indeterminado.","Emplea la regla de Ruffini para dictaminar si los siguientes números son o no raíces de los polinomios citados:
a) ????3 de ????4????5
b) ????2 de ????2????????2
c) ????1 de 2????????1
d) ????1 de 2????2????",[268],{"_43":219,"_56":220,"_58":221,"_149":150,"_151":222,"_122":164,"_124":164,"_45":269,"_126":226},{"_154":224,"_156":157,"_158":225},[271,273,279,281,283],{"_43":219,"_56":220,"_58":221,"_149":150,"_151":222,"_122":164,"_124":164,"_45":272,"_126":226},{"_154":224,"_156":157,"_158":225},{"_43":274,"_56":57,"_58":59,"_149":150,"_151":219,"_122":275,"_124":275,"_45":276,"_126":278},"88fe96b3-2a17-4198-90d5-ddda3d6f5d45","2025-04-29T03:44:35.328997+00:00",{"_154":224,"_156":157,"_158":277},25741,"mecanica-3",{"_43":146,"_56":147,"_58":148,"_149":150,"_151":-5,"_122":152,"_124":152,"_45":280,"_126":148},{"_154":155,"_156":157,"_158":159},{"_43":163,"_56":57,"_58":59,"_149":150,"_151":146,"_122":164,"_124":164,"_45":282,"_126":168},{"_154":166,"_156":157,"_158":167},{"_43":222,"_56":284,"_58":285,"_149":150,"_151":-5,"_122":286,"_124":286,"_45":287,"_126":285},"Engenharia","engenharia","2025-04-29T01:55:38.635246+00:00",{"_154":288,"_156":157,"_158":289},29,351586,"tagsTree",[292,298],{"_43":146,"_56":147,"_58":148,"_149":150,"_151":-5,"_122":152,"_124":152,"_45":293,"_126":148,"_160":294},{"_154":155,"_156":157,"_158":159},[295],{"_43":163,"_56":57,"_58":59,"_149":150,"_151":146,"_122":164,"_124":164,"_45":296,"_126":168,"_160":297},{"_154":166,"_156":157,"_158":167},[],{"_43":222,"_56":284,"_58":285,"_149":150,"_151":-5,"_122":286,"_124":286,"_45":299,"_126":285,"_160":300},{"_154":288,"_156":157,"_158":289},[301],{"_43":219,"_56":220,"_58":221,"_149":150,"_151":222,"_122":164,"_124":164,"_45":302,"_126":226,"_160":303},{"_154":224,"_156":157,"_158":225},[304],{"_43":274,"_56":57,"_58":59,"_149":150,"_151":219,"_122":275,"_124":275,"_45":305,"_126":278,"_160":306},{"_154":224,"_156":157,"_158":277},[],"videoDislikes",{},"videoLikes",{},"actionData","errors"]

Comentários