Quiz — C-EX04-SAQ-CA.pdf

Question 1 sur 10 20:00

[{"id":9433,"question":"Quelle formule permet de calculer la vitesse moyenne d’un mobile ?","option_a":"v = d × t","option_b":"v = d \/ t","option_c":"v = t \/ d","option_d":"v = d + t","option_e":"","option_f":"","bonne_reponse":"b","explication":"La vitesse moyenne se calcule en divisant la distance parcourue (d) par le temps écoulé (t).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"v = d × t\", \"b\": \"v = d \/ t\", \"c\": \"v = t \/ d\", \"d\": \"v = d + t\"","_debug_options_count":4},{"id":9434,"question":"Dans un circuit électrique en série, l’intensité du courant est la même dans tous les dipôles.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"Dans un circuit en série, l’intensité est effectivement la même dans tous les dipôles.","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":9435,"question":"Quelle est l’unité SI de la force ?","option_a":"Le newton (N)","option_b":"Le joule (J)","option_c":"Le watt (W)","option_d":"Le pascal (Pa)","option_e":"","option_f":"","bonne_reponse":"a","explication":"L’unité SI de la force est le newton (N), en hommage à Isaac Newton.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Le newton (N)\", \"b\": \"Le joule (J)\", \"c\": \"Le watt (W)\", \"d\": \"Le","_debug_options_count":4},{"id":9436,"question":"La loi des gaz parfaits s’écrit : PV = nRT. Que représente 'n' dans cette formule ?","option_a":"La pression","option_b":"Le volume","option_c":"Le nombre de moles","option_d":"La température absolue","option_e":"","option_f":"","bonne_reponse":"c","explication":"'n' représente le nombre de moles de gaz dans la loi des gaz parfaits.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"c\", \"options\": {\"a\": \"La pression\", \"b\": \"Le volume\", \"c\": \"Le nombre de moles\", \"d\": \"","_debug_options_count":4},{"id":9437,"question":"Un objet est en équilibre si la somme des forces qui s’exercent sur lui est nulle.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"Un objet est en équilibre si la somme vectorielle des forces est nulle (1ère condition d’équilibre).","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":9438,"question":"Quelle est la dérivée de la fonction f(x) = 3x² + 2x - 5 ?","option_a":"f’(x) = 6x + 2","option_b":"f’(x) = 3x + 2","option_c":"f’(x) = 6x - 5","option_d":"f’(x) = 3x² + 2","option_e":"","option_f":"","bonne_reponse":"a","explication":"La dérivée de 3x² est 6x, celle de 2x est 2, et celle de -5 est 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\": \"f’(x) = 6x + 2\", \"b\": \"f’(x) = 3x + 2\", \"c\": \"f’(x) = 6x - ","_debug_options_count":4},{"id":9439,"question":"Dans une solution acide, le pH est toujours inférieur à 7.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"Un pH inférieur à 7 indique une solution acide, égal à 7 neutre, et supérieur à 7 basique.","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":9440,"question":"Quelle est la formule de l’énergie cinétique d’un objet en mouvement ?","option_a":"E_c = m × v","option_b":"E_c = ½ × m × v²","option_c":"E_c = m × g × h","option_d":"E_c = P × t","option_e":"","option_f":"","bonne_reponse":"b","explication":"L’énergie cinétique se calcule avec la formule E_c = ½ × m × v².","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"E_c = m × v\", \"b\": \"E_c = ½ × m × v²\", \"c\": \"E_c = m × g ×","_debug_options_count":4},{"id":9441,"question":"La tension électrique aux bornes d’un conducteur ohmique est proportionnelle à l’intensité du courant qui le traverse.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"C’est la loi d’Ohm : U = R × I, où U est la tension et I l’intensité.","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":9442,"question":"Quelle est la valeur de l’accélération de la pesanteur (g) sur Terre ?","option_a":"9,8 m\/s²","option_b":"10 m\/s²","option_c":"11,2 m\/s²","option_d":"9,81 N\/kg","option_e":"","option_f":"","bonne_reponse":"a","explication":"L’accélération de la pesanteur sur Terre est d’environ 9,8 m\/s².","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"9,8 m\/s²\", \"b\": \"10 m\/s²\", \"c\": \"11,2 m\/s²\", \"d\": \"9,81 N\/kg\"}","_debug_options_count":4}]