Quiz — 67f3f89592592_pression-formelle-série17.pdf

Question 1 sur 10 20:00

[{"id":53144,"question":"Quelle est l'unité de pression dans le système international ?","option_a":"Newton (N)","option_b":"Pascal (Pa)","option_c":"Joule (J)","option_d":"Watt (W)","option_e":"","option_f":"","bonne_reponse":"b","explication":"Le pascal (Pa) est l'unité de pression, équivalent à 1 newton par mètre carré (N\/m²).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"Newton (N)\", \"b\": \"Pascal (Pa)\", \"c\": \"Joule (J)\", \"d\": \"Watt (W)","_debug_options_count":4},{"id":53146,"question":"Si une force de 50 N est appliquée sur une surface de 2 m², quelle est la pression exercée ?","option_a":"25 Pa","option_b":"100 Pa","option_c":"250 Pa","option_d":"50 Pa","option_e":"","option_f":"","bonne_reponse":"a","explication":"La pression P = F\/S = 50 N \/ 2 m² = 25 Pa.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"25 Pa\", \"b\": \"100 Pa\", \"c\": \"250 Pa\", \"d\": \"50 Pa\"}}","_debug_options_count":4},{"id":53147,"question":"La pression atmosphérique au niveau de la mer est d'environ 101 325 Pa.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"C'est la valeur standard de la pression atmosphérique au niveau de la mer.","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":53149,"question":"Quel appareil mesure la pression atmosphérique ?","option_a":"Dynamomètre","option_b":"Baromètre","option_c":"Manomètre","option_d":"Thermomètre","option_e":"","option_f":"","bonne_reponse":"b","explication":"Le baromètre est conçu pour mesurer la pression atmosphérique.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"Dynamomètre\", \"b\": \"Baromètre\", \"c\": \"Manomètre\", \"d\": \"Thermo","_debug_options_count":4},{"id":53151,"question":"Si la surface d'application d'une force double, que devient la pression ?","option_a":"Elle double","option_b":"Elle reste la même","option_c":"Elle est divisée par deux","option_d":"Elle quadruple","option_e":"","option_f":"","bonne_reponse":"c","explication":"La pression est inversement proportionnelle à la surface (P = F\/S). Si S double, P est divisée par 2.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"c\", \"options\": {\"a\": \"Elle double\", \"b\": \"Elle reste la même\", \"c\": \"Elle est divisée","_debug_options_count":4},{"id":53152,"question":"La pression hydrostatique dépend uniquement de la profondeur dans un fluide.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"Elle dépend aussi de la masse volumique du fluide (P = ρgh).","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":53153,"question":"Un plongeur descend à 10 mètres sous l'eau. Quelle est la pression supplémentaire due à l'eau (masse volumique = 1000 kg\/m³) ?","option_a":"10 000 Pa","option_b":"98 000 Pa","option_c":"100 000 Pa","option_d":"1 000 Pa","option_e":"","option_f":"","bonne_reponse":"b","explication":"P = ρgh = 1000 × 9,81 × 10 ≈ 98 000 Pa (pression supplémentaire).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"10 000 Pa\", \"b\": \"98 000 Pa\", \"c\": \"100 000 Pa\", \"d\": \"1 000 Pa\"}","_debug_options_count":4},{"id":53154,"question":"Le principe de Pascal s'applique aux fluides incompressibles.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"Ce principe est valable pour les fluides incompressibles comme les liquides.","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":53155,"question":"Une pression de 200 kPa équivaut à :","option_a":"200 000 Pa","option_b":"20 Pa","option_c":"0,2 Pa","option_d":"2 000 Pa","option_e":"","option_f":"","bonne_reponse":"a","explication":"1 kPa = 1 000 Pa, donc 200 kPa = 200 000 Pa.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"200 000 Pa\", \"b\": \"20 Pa\", \"c\": \"0,2 Pa\", \"d\": \"2 000 Pa\"}}","_debug_options_count":4},{"id":53156,"question":"Dans un système hydraulique, si on applique une petite force sur une petite surface, on peut obtenir une grande force sur une grande surface.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"C'est le principe des systèmes hydrauliques : la pression se transmet intégralement (F1\/S1 = F2\/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\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4}]