Đề tham khảo tốt nghiệp THPT môn Vật lí năm 2025 của Vĩnh Phúc (mã 204)

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{"save":1,"level":1,"time":"50","total":40,"point":5,"segment":[{"id":"4720","test_id":"523","question":"M\u1ed9t l\u01b0\u1ee3ng khí lí t\u01b0\u1edfng \u1edf nhi\u1ec7t \u0111\u1ed9 300 K có \u0111\u1ed9ng n\u0103ng t\u1ecbnh ti\u1ebfn trung bình c\u1ee7a m\u1ed7i phân t\u1eed là $\\overline{E_d}$<\/span>. N\u1ebfu nhi\u1ec7t \u0111\u1ed9 t\u0103ng lên \u0111\u1ebfn 600 K thì \u0111\u1ed9ng n\u0103ng t\u1ecbnh ti\u1ebfn trung bình m\u1ed7i phân t\u1eed s\u1ebd là:<\/p>","options":["A.<\/strong> $4\\overline{E_d}$<\/span>.","B.<\/strong> $\\overline{E_d}$<\/span>.","C.<\/strong> $2\\overline{E_d}$<\/span>.","D.<\/strong> $\\dfrac{1}{2}\\overline{E_d}$<\/span>."],"correct":"3","answer":"Ch\u1ecdn C.<\/strong> $2\\overline{E_d}$<\/span>.<\/span><\/p>Ta có: $\\overline{E_d}=\\dfrac{3}{2}kT$<\/span> ⇒ $\\dfrac{E^\\prime_d}{E_d}=\\dfrac{T^\\prime}{T}=\\dfrac{600}{300}=2$<\/span> ⇒ $E^\\prime_d=2E_d$<\/span>.<\/p>","type":"choose","user_id":"131","test":"1","date":"2025-06-07 08:14:08"},{"id":"4723","test_id":"523","question":"B\u1ea1n A mu\u1ed1n \u0111un sôi 1,5 lít n\u01b0\u1edbc b\u1eb1ng b\u1ebfp gas. Do s\u01a1 su\u1ea5t nên b\u1ea1n quên không t\u1eaft b\u1ebfp khi n\u01b0\u1edbc sôi. Bi\u1ebft nhi\u1ec7t hóa h\u01a1i riêng c\u1ee7a n\u01b0\u1edbc là 2,26.106<\/sup> J\/kg và kh\u1ed1i l\u01b0\u1ee3ng riêng c\u1ee7a n\u01b0\u1edbc là 103<\/sup> kg\/m3<\/sup>. Nhi\u1ec7t l\u01b0\u1ee3ng \u0111ã làm hóa h\u01a1i 1 lít n\u01b0\u1edbc trong \u1ea5m \u1edf nhi\u1ec7t \u0111\u1ed9 sôi do s\u01a1 su\u1ea5t \u0111ó b\u1eb1ng:<\/p>","options":["A.<\/strong> 3,45.106<\/sup> J\/kg.","B.<\/strong> 4,52.106<\/sup> J\/kg.","C.<\/strong> 2,26.106<\/sup> J\/kg.","D.<\/strong> 1,13.106<\/sup> J\/kg."],"correct":"3","answer":"Ch\u1ecdn C.<\/strong> 2,26.106<\/sup> J\/kg.<\/span><\/p>m = VD = 1.10–3<\/sup> . 103<\/sup> = 1 (kg).<\/p>Q = mL = 1 . 2,26.106<\/sup> = 2,26.106<\/sup> (J\/kg).<\/p>V\u1eady nhi\u1ec7t l\u01b0\u1ee3ng \u0111ã làm hóa h\u01a1i 1 lít n\u01b0\u1edbc trong \u1ea5m \u1edf nhi\u1ec7t \u0111\u1ed9 sôi do s\u01a1 su\u1ea5t \u0111ó b\u1eb1ng 2,26.106<\/sup> J\/kg.<\/p>","type":"choose","user_id":"131","test":"1","date":"2025-06-07 08:18:02"}]}