Quiz — SP EXAM QUESTION 1+2 V 1.2.docx

Question 1 sur 10 20:00

[{"id":85885,"question":"Quelle est l’unité de la force dans le système international (SI) ?","option_a":"Newton (N)","option_b":"Joule (J)","option_c":"Watt (W)","option_d":"Pascal (Pa)","option_e":"","option_f":"","bonne_reponse":"a","explication":"L’unité de force dans le SI est le Newton (N), en hommage à Isaac Newton. 1 N = 1 kg·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\": \"Newton (N)\", \"b\": \"Joule (J)\", \"c\": \"Watt (W)\", \"d\": \"Pascal (Pa)","_debug_options_count":4},{"id":85886,"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":"Vrai. Dans un circuit en série, l’intensité du courant est constante quel que soit le dipôle.","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":85887,"question":"La formule de la vitesse moyenne est :","option_a":"v = d × t","option_b":"v = d \/ t","option_c":"v = t \/ d","option_d":"v = a × t","option_e":"","option_f":"","bonne_reponse":"b","explication":"La vitesse moyenne se calcule par v = d \/ t, où d est la distance parcourue et t le temps écoulé.","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 = a × t","_debug_options_count":4},{"id":85888,"question":"Un acide a un pH :","option_a":"Supérieur à 7","option_b":"Égal à 7","option_c":"Inférieur à 7","option_d":"Toujours égal à 0","option_e":"","option_f":"","bonne_reponse":"c","explication":"Un acide a un pH inférieur à 7. Plus le pH est bas, plus l’acide est fort.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"c\", \"options\": {\"a\": \"Supérieur à 7\", \"b\": \"Égal à 7\", \"c\": \"Inférieur à 7\", \"d\":","_debug_options_count":4},{"id":85889,"question":"La loi d’Ohm s’écrit :","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"b","explication":"Vrai. La loi d’Ohm s’écrit U = R × I, où U est la tension, R la résistance 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\": \"b\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":85890,"question":"Quelle est la formule du travail d’une force ?","option_a":"W = F × d","option_b":"W = F \/ d","option_c":"W = m × g","option_d":"W = P × t","option_e":"","option_f":"","bonne_reponse":"a","explication":"Le travail d’une force se calcule par W = F × d × cos(θ), où F est la force, d le déplacement et θ l’angle entre la force et le déplacement.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"W = F × d\", \"b\": \"W = F \/ d\", \"c\": \"W = m × g\", \"d\": \"W = P × ","_debug_options_count":4},{"id":85891,"question":"Un corps en chute libre est soumis uniquement à son poids.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"Vrai. En chute libre (sans frottement), un corps n’est soumis qu’à son poids (force de gravité).","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":85892,"question":"La réaction de combustion complète d’un hydrocarbure produit :","option_a":"Du dioxygène et de l’eau","option_b":"Du dioxyde de carbone et de l’eau","option_c":"Du monoxyde de carbone et du carbone","option_d":"De l’azote et de l’oxygène","option_e":"","option_f":"","bonne_reponse":"b","explication":"La combustion complète d’un hydrocarbure produit du dioxyde de carbone (CO₂) et de l’eau (H₂O).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"Du dioxygène et de l’eau\", \"b\": \"Du dioxyde de carbone et de l","_debug_options_count":4},{"id":85893,"question":"La puissance électrique se mesure en :","option_a":"Watt (W)","option_b":"Joule (J)","option_c":"Ampère (A)","option_d":"Volt (V)","option_e":"","option_f":"","bonne_reponse":"a","explication":"La puissance électrique s’exprime en Watt (W). 1 W = 1 J\/s.","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\": \"Joule (J)\", \"c\": \"Ampère (A)\", \"d\": \"Volt (V)\"}","_debug_options_count":4},{"id":85894,"question":"Un miroir convexe donne toujours une image :","option_a":"Vraie et droite","option_b":"Vraie et renversée","option_c":"Fausse et droite","option_d":"Fausse et renversée","option_e":"","option_f":"","bonne_reponse":"c","explication":"Faux. Un miroir convexe donne toujours une image virtuelle, droite et plus petite que l’objet.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"c\", \"options\": {\"a\": \"Vraie et droite\", \"b\": \"Vraie et renversée\", \"c\": \"Fausse et dro","_debug_options_count":4}]