Quiz — Physics for Scientists and Engineers 8th Edition Solutions Manual.PDF

Question 1 sur 10 20:00

[{"id":38540,"question":"Quelle est l'unité SI de la constante de Planck (h) ?","option_a":"A. J·s","option_b":"B. N·m","option_c":"C. kg·m²\/s²","option_d":"D. Wb","option_e":"","option_f":"","bonne_reponse":"a","explication":"La constante de Planck s'exprime en joules-seconde (J·s), unité dérivée du SI pour l'action.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"A. J·s\", \"b\": \"B. N·m\", \"c\": \"C. kg·m²\/s²\", \"d\": \"D. Wb\"}}","_debug_options_count":4},{"id":38541,"question":"Dans un circuit RC série, le temps caractéristique τ est égal à :","option_a":"A. R\/C","option_b":"B. C\/R","option_c":"C. R·C","option_d":"D. 1\/(R·C)","option_e":"","option_f":"","bonne_reponse":"c","explication":"Le temps caractéristique τ d'un circuit RC est donné par τ = R·C, où R est la résistance et C la capacité.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"c\", \"options\": {\"a\": \"A. R\/C\", \"b\": \"B. C\/R\", \"c\": \"C. R·C\", \"d\": \"D. 1\/(R·C)\"}}","_debug_options_count":4},{"id":38542,"question":"La loi de conservation de l'énergie mécanique s'applique uniquement si les forces sont conservatives.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"La loi de conservation de l'énergie mécanique n'est valable que pour les systèmes soumis à des forces conservatives (pas de frottements, par exemple).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":38543,"question":"Quel est le résultat de l'intégrale ∫ x² dx entre 0 et 1 ?","option_a":"A. 1\/3","option_b":"B. 1\/2","option_c":"C. 1","option_d":"D. 3","option_e":"","option_f":"","bonne_reponse":"a","explication":"L'intégrale de x² entre 0 et 1 vaut [x³\/3]₀¹ = 1\/3 - 0 = 1\/3.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"A. 1\/3\", \"b\": \"B. 1\/2\", \"c\": \"C. 1\", \"d\": \"D. 3\"}}","_debug_options_count":4},{"id":38544,"question":"Dans un mouvement circulaire uniforme, l'accélération est :","option_a":"A. Nulle","option_b":"B. Centripète","option_c":"C. Tangentielle","option_d":"D. Radiale","option_e":"","option_f":"","bonne_reponse":"b","explication":"L'accélération dans un mouvement circulaire uniforme est centripète (dirigée vers le centre) et de norme constante v²\/r.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"A. Nulle\", \"b\": \"B. Centripète\", \"c\": \"C. Tangentielle\", \"d\": \"D","_debug_options_count":4},{"id":38545,"question":"Le premier principe de la thermodynamique s'écrit ΔU = Q - W.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"b","explication":"Le premier principe s'écrit ΔU = Q + W si W est le travail reçu par le système (convention thermodynamique).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":38546,"question":"Quelle est la vitesse de propagation de la lumière dans le vide (c) ?","option_a":"A. 3·10⁸ m\/s","option_b":"B. 3·10⁵ km\/s","option_c":"C. 3·10⁸ km\/h","option_d":"D. 3·10⁵ m\/s","option_e":"","option_f":"","bonne_reponse":"a","explication":"La vitesse de la lumière dans le vide est c = 3·10⁸ m\/s (ou 299 792 458 m\/s exactement).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"A. 3·10⁸ m\/s\", \"b\": \"B. 3·10⁵ km\/s\", \"c\": \"C. 3·10⁸ km\/h","_debug_options_count":4},{"id":38547,"question":"L'équation de Schrödinger indépendante du temps décrit :","option_a":"A. L'évolution temporelle d'une particule","option_b":"B. Les états stationnaires d'un système quantique","option_c":"C. La trajectoire d'un électron","option_d":"D. La vitesse de décohérence","option_e":"","option_f":"","bonne_reponse":"b","explication":"L'équation de Schrödinger indépendante du temps donne les états stationnaires (fonctions d'onde) d'un système quantique.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"A. L'évolution temporelle d'une particule\", \"b\": \"B. Les états ","_debug_options_count":4},{"id":38548,"question":"Un gaz parfait subit une transformation isochore. Que peut-on dire de sa pression ?","option_a":"A. Elle reste constante","option_b":"B. Elle augmente si la température augmente","option_c":"C. Elle diminue si le volume augmente","option_d":"D. Elle dépend du travail échangé","option_e":"","option_f":"","bonne_reponse":"b","explication":"Dans une transformation isochore (volume constant), la pression d'un gaz parfait est proportionnelle à sa température absolue (loi de Gay-Lussac).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"A. Elle reste constante\", \"b\": \"B. Elle augmente si la températu","_debug_options_count":4},{"id":38549,"question":"La force de Lorentz s'exprime par :","option_a":"A. F = q·E","option_b":"B. F = q·(E + v×B)","option_c":"C. F = m·a","option_d":"D. F = G·m₁·m₂\/r²","option_e":"","option_f":"","bonne_reponse":"b","explication":"La force de Lorentz est la somme de la force électrique (q·E) et de la force magnétique (q·v×B) exercée sur une charge q en mouvement.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"A. F = q·E\", \"b\": \"B. F = q·(E + v×B)\", \"c\": \"C. F = m·a\", \"d","_debug_options_count":4}]