Quiz — Lycée Pilote Monastir - DC 2 2021.pdf

Question 1 sur 10 20:00

[{"id":29310,"question":"Quelle est la formule de la force gravitationnelle entre deux corps ?","option_a":"F = m * a","option_b":"F = G * (m1 * m2) \/ d²","option_c":"F = P * V","option_d":"F = m * g","option_e":"","option_f":"","bonne_reponse":"b","explication":"La formule de la force gravitationnelle est F = G * (m1 * m2) \/ d², où G est la constante gravitationnelle, m1 et m2 les masses, et d la distance entre les centres des deux corps.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"F = m * a\", \"b\": \"F = G * (m1 * m2) \/ d²\", \"c\": \"F = P * V\", \"d\"","_debug_options_count":4},{"id":29311,"question":"La tension électrique se mesure en volts.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"Vrai, la tension électrique se mesure en volts (V), selon le système international d'unités.","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":29312,"question":"Quel est le pH d'une solution neutre à 25°C ?","option_a":"pH = 0","option_b":"pH = 7","option_c":"pH = 14","option_d":"pH = 10","option_e":"","option_f":"","bonne_reponse":"b","explication":"À 25°C, une solution neutre a un pH de 7. Un pH inférieur à 7 indique une solution acide, et supérieur à 7 une solution basique.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"pH = 0\", \"b\": \"pH = 7\", \"c\": \"pH = 14\", \"d\": \"pH = 10\"}}","_debug_options_count":4},{"id":29313,"question":"La loi d'Ohm s'écrit :","option_a":"U = R * I","option_b":"P = U * I","option_c":"E = m * c²","option_d":"F = m * a","option_e":"","option_f":"","bonne_reponse":"a","explication":"La loi d'Ohm s'exprime par U = R * I, où U est la tension, R la résistance et I l'intensité du courant électrique.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"U = R * I\", \"b\": \"P = U * I\", \"c\": \"E = m * c²\", \"d\": \"F = m * a","_debug_options_count":4},{"id":29314,"question":"Un atome est électriquement neutre car il contient autant de protons que d'électrons.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"Vrai, un atome est électriquement neutre car il possède un nombre égal de protons (chargés positivement) et d'électrons (chargés négativement).","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":29315,"question":"Quelle est l'unité de la puissance électrique ?","option_a":"Watt (W)","option_b":"Volt (V)","option_c":"Ampère (A)","option_d":"Ohm (Ω)","option_e":"","option_f":"","bonne_reponse":"a","explication":"L'unité de la puissance électrique est le watt (W), qui correspond à la quantité d'énergie transférée par unité de temps.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Watt (W)\", \"b\": \"Volt (V)\", \"c\": \"Ampère (A)\", \"d\": \"Ohm (Ω)\"}}","_debug_options_count":4},{"id":29316,"question":"Un corps en mouvement rectiligne uniforme a une accélération nulle.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"Vrai, un corps en mouvement rectiligne uniforme a une vitesse constante, donc une accélération nulle (a = Δv\/Δt = 0).","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":29317,"question":"Quel est le symbole chimique de l'oxygène ?","option_a":"O","option_b":"Ox","option_c":"O2","option_d":"Oxy","option_e":"","option_f":"","bonne_reponse":"a","explication":"Le symbole chimique de l'oxygène est O. O2 représente la molécule de dioxygène, composée de deux atomes d'oxygène.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"O\", \"b\": \"Ox\", \"c\": \"O2\", \"d\": \"Oxy\"}}","_debug_options_count":4},{"id":29318,"question":"La vitesse d'un objet se calcule par la formule :","option_a":"v = d \/ t","option_b":"v = a * t","option_c":"v = F \/ m","option_d":"v = P \/ V","option_e":"","option_f":"","bonne_reponse":"a","explication":"La vitesse d'un objet se calcule par v = d \/ t, où d est la distance parcourue et t le temps mis pour la parcourir.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"v = d \/ t\", \"b\": \"v = a * t\", \"c\": \"v = F \/ m\", \"d\": \"v = P \/ V\"}","_debug_options_count":4},{"id":29319,"question":"Un acide a un pH inférieur à 7.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"Vrai, un acide est caractérisé par un pH inférieur à 7. Plus le pH est bas, plus l'acidité est forte.","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}]