{"id":2631,"date":"2021-10-14T21:14:41","date_gmt":"2021-10-14T14:14:41","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=2631"},"modified":"2021-10-14T22:11:58","modified_gmt":"2021-10-14T15:11:58","slug":"va%cc%a3t-ly-lop-8-tro%cc%a3n-bo%cc%a3-bi-kip-ho%cc%a3c-tot-nang-cao-diem-so","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/va%cc%a3t-ly-lop-8-tro%cc%a3n-bo%cc%a3-bi-kip-ho%cc%a3c-tot-nang-cao-diem-so\/","title":{"rendered":"V\u00e2\u0323t ly\u0301 l\u1edbp 8: Tro\u0323n b\u00f4\u0323 bi\u0301 ki\u0301p ho\u0323c t\u00f4\u0301t n\u00e2ng cao \u0111i\u1ec3m s\u1ed1"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ho\u0323c sinh \u0111\u01b0\u01a1\u0323c la\u0300m quen v\u01a1\u0301i m\u00f4n ho\u0323c V\u00e2\u0323t ly\u0301 b\u0103\u0301t \u0111\u00e2\u0300u t\u01b0\u0300 n\u0103m l\u01a1\u0301p 6. M\u00f4n ho\u0323c na\u0300y se\u0303 \u0111\u00f4\u0300ng ha\u0300nh cu\u0300ng ca\u0301c ba\u0323n ho\u0323c sinh cho \u0111\u00ea\u0301n n\u0103m l\u01a1\u0301p 12. \u01a0\u0309 m\u00f4\u0303i l\u01a1\u0301p ho\u0323c, ca\u0301c em se\u0303 \u0111\u01b0\u01a1\u0323c ti\u00ea\u0301p xu\u0301c v\u01a1\u0301i ca\u0301c n\u00f4\u0323i dung ki\u00ea\u0301n th\u01b0\u0301c kha\u0301c nhau. V\u01a1\u0301i ch\u01b0\u01a1ng tri\u0300nh ho\u0323c V\u00e2\u0323t ly\u0301 8 xoay quanh n\u00f4\u0323i dung: c\u01a1 ho\u0323c va\u0300 nhi\u00ea\u0323t ho\u0323c. V\u00e2\u0323t Ly\u0301 8 co\u0301 kho\u0301 kh\u00f4ng? Ba\u0323n mu\u00f4\u0301n ho\u0323c t\u00f4\u0301t V\u00e2\u0323t Ly\u0301 l\u1edbp 8? Tro\u0323n b\u00f4\u0323 bi\u0301 ki\u0301p ho\u0323c t\u00f4\u0301t V\u00e2\u0323t ly\u0301 8 se\u0303 \u0111\u01b0\u01a1\u0323c Vietlearn t\u00f4\u0309ng h\u01a1\u0323p trong ba\u0300i vi\u00ea\u0301t sau:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u0103\u0301m ro\u0303 ki\u00ea\u0301n th\u01b0\u0301c c\u00e2\u0300n ho\u0323c<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00ea\u0309 ho\u0323c t\u00f4\u0301t b\u0103\u0301t ki\u0300 m\u00f4n ho\u0323c na\u0300o, chu\u0301ng ta \u0111\u00ea\u0300u c\u00e2\u0300n pha\u0309i bi\u00ea\u0301t ro\u0303 \u0111\u01b0\u01a1\u0323c n\u00f4\u0323i dung c\u00e2\u0300n ho\u0323c. D\u01b0\u0323a tr\u00ean n\u00f4\u0323i dung \u0111o\u0301 \u0111\u00ea\u0300 ra k\u00ea\u0301 hoa\u0323ch va\u0300 ph\u01b0\u01a1ng pha\u0301p ho\u0323c t\u00e2\u0323p hi\u00ea\u0323u qua\u0309. T\u01b0\u01a1ng t\u01b0\u0323, ta se\u0303 chi\u0309 ho\u0323c t\u00f4\u0301t V\u00e2\u0323t Ly\u0301 8 khi n\u0103\u0301m ro\u0303 \u0111\u01b0\u01a1\u0323c n\u00f4\u0323i dung ch\u01b0\u01a1ng tri\u0300nh ho\u0323c. N\u00f4\u0323i dung pha\u0309i ho\u0323c trong ch\u01b0\u01a1ng tri\u0300nh V\u00e2\u0323t ly\u0301 8 se\u0303 g\u00f4\u0300m 2 ch\u01b0\u01a1ng: c\u01a1 ho\u0323c va\u0300 nhi\u00ea\u0323t ho\u0323c.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u01a1 ho\u0323c<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ki\u00ea\u0301n th\u01b0\u0301c c\u01a1 ho\u0323c trong V\u00e2\u0323t ly\u0301 8<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Chuy\u00ea\u0309n \u0111\u00f4\u0323ng c\u01a1 ho\u0323c.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00e2\u0323n t\u00f4\u0301c: v\u00e2\u0323n t\u00f4\u0301c trung bi\u0300nh, v\u00e2\u0323n t\u00f4\u0301c t\u01b0\u01a1ng \u0111\u00f4\u0301i, ca\u0301c \u0111\u01a1n vi\u0323 v\u00e2\u0323n t\u00f4\u0301c,\u2026<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L\u01b0\u0323c, bi\u00ea\u0309u di\u00ea\u0303n l\u01b0\u0323c.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L\u01b0\u0323c qua\u0301n ti\u0301nh, s\u01b0\u0323 c\u00e2n b\u0103\u0300ng l\u01b0\u0323c qua\u0301n ti\u0301nh.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L\u01b0\u0323c ma sa\u0301t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A\u0301p su\u00e2\u0301t: \u0111\u01a1n vi\u0323, \u0111i\u0323nh nghi\u0303a, ca\u0301ch ti\u0301nh,\u2026<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A\u0301p su\u00e2\u0301t ch\u00e2\u0301t lo\u0309ng bi\u0300nh th\u00f4ng nhau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A\u0301p su\u00e2\u0301t khi\u0301 quy\u00ea\u0309n: c\u00f4ng th\u01b0\u0301c ti\u0301nh, nguy\u00ean nh\u00e2n ta\u0323o tha\u0300nh a\u0301p su\u00e2\u0301t khi\u0301 quy\u00ea\u0309n,\u2026<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L\u01b0\u0323c \u0111\u00e2\u0309y Acsimet: \u0111i\u0323nh lu\u00e2\u0323t, c\u00f4ng th\u01b0\u0301c,\u2026<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f4ng c\u01a1 ho\u0323c: ca\u0301ch ti\u0301nh, nh\u01b0\u0303ng y\u00ea\u0301u t\u00f4\u0301 a\u0309nh h\u01b0\u01a1\u0309ng,\u2026<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f4ng su\u00e2\u0301t: ca\u0301ch ti\u0301nh, \u0111\u01a1n vi\u0323 \u0111o,\u2026<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u01a1 n\u0103ng v\u00e2\u0323t ly\u0301: \u0111i\u0323nh lu\u00e2\u0323t ba\u0309o toa\u0300n c\u01a1 n\u0103ng, c\u00f4ng th\u01b0\u0301c,\u2026<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nhi\u00ea\u0323t ho\u0323c<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nhi\u00ea\u0323t n\u0103ng: ca\u0301ch d\u00e2\u0303n nhi\u00ea\u0323t, ca\u0301ch la\u0300m thay \u0111\u00f4\u0309i,\u2026<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u00e2\u0301t d\u00e2\u0303n nhi\u00ea\u0323t, \u0111\u00f4\u0301i l\u01b0u b\u01b0\u0301c xa\u0323 nhi\u00ea\u0323t,\u2026<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f4ng th\u01b0\u0301c ti\u0301nh nhi\u00ea\u0323t l\u01b0\u01a1\u0323ng, nhi\u00ea\u0323t l\u01b0\u01a1\u0323ng to\u0309a ra,\u2026<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e2n b\u0103\u0300ng nhi\u00ea\u0323t: c\u00f4ng th\u01b0\u0301c, ph\u01b0\u01a1ng tri\u0300nh c\u00e2n b\u0103\u0300ng,\u2026<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u01a1\u0301i m\u00f4\u0303i n\u00f4\u0323i dung ki\u00ea\u0301n th\u01b0\u0301c, Vietlearn \u0111\u00ea\u0300u co\u0301 nh\u01b0\u0303ng ba\u0300i gia\u0309ng chi ti\u00ea\u0301t. Tham gia ngay l\u01a1\u0301p ho\u0323c tr\u01b0\u0323c tuy\u00ea\u0301n cu\u0309a Vietlearn \u0111\u00ea\u0309 tra\u0309i nghi\u00ea\u0323m nh\u01b0\u0303ng ba\u0300i ho\u0323c thu\u0301 vi\u0323, d\u00ea\u0303 hi\u00ea\u0309u.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>\u0110o\u0323c th\u00eam: V\u00e2\u0323t ly\u0301 9: B\u01b0\u0301t pha\u0301 ma\u0323nh me\u0303 v\u01a1\u0301i ca\u0301ch ho\u0323c m\u01a1\u0301i chu\u00e2\u0309n khoa ho\u0323c<\/p><\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Re\u0300n luy\u00ea\u0323n th\u00f4ng qua la\u0300m ba\u0300i t\u00e2\u0323p<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ki\u00ea\u0301n th\u01b0\u0301c se\u0303 chi\u0309 th\u01b0\u0323c s\u01b0\u0323 tr\u01a1\u0309 tha\u0300nh cu\u0309a ba\u0309n th\u00e2n khi ta co\u0301 th\u00ea\u0309 t\u01b0\u0323 mi\u0300nh a\u0301p du\u0323ng va\u0300o la\u0300m ba\u0300i t\u00e2\u0323p. Kh\u00f4\u0301i l\u01b0\u01a1\u0323ng va\u0300 ca\u0301c da\u0323ng ba\u0300i t\u00e2\u0323p V\u00e2\u0323t Ly\u0301 8 t\u01b0\u01a1ng \u0111\u00f4\u0301i l\u01a1\u0301n va\u0300 \u0111a da\u0323ng. \u0110\u00ea\u0309 h\u00f4\u0303 tr\u01a1\u0323 cho vi\u00ea\u0323c luy\u00ea\u0323n t\u00e2\u0323p cu\u0309a ca\u0301c ba\u0323n ho\u0323c sinh, Vietlearn se\u0303 giu\u0301p ba\u0323n hi\u0300nh dung \u0111\u01b0\u01a1\u0323c ca\u0301c da\u0323ng ba\u0300i t\u00e2\u0323p \u0111i\u00ea\u0309n hi\u0300nh cu\u0309a V\u00e2\u0323t ly\u0301 8.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ba\u0300i t\u00e2\u0323p C\u01a1 ho\u0323c<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ba\u0300i 1: Khi ma\u0301y bay \u0111ang cha\u0323y tr\u00ean \u0111\u01b0\u01a1\u0300ng bay \u0111\u00ea\u0309 chu\u00e2\u0309n bi\u0323 c\u00e2\u0301t ca\u0301nh thi\u0300 \u0111\u00f4\u0301i v\u01a1\u0301i ha\u0300nh kha\u0301ch nh\u01b0\u0303ng v\u00e2\u0323t na\u0300o chuy\u00ea\u0309n \u0111\u00f4\u0323ng trong ca\u0301c v\u00e2\u0323t sau: ng\u01b0\u01a1\u0300i phi c\u00f4ng, ma\u0301y bay, ha\u0300nh kha\u0301ch, s\u00e2n bay?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L\u01a1\u0300i gia\u0309i: Theo ly\u0301 thuy\u00ea\u0301t ti\u0301nh t\u01b0\u01a1ng \u0111\u00f4\u0301i cu\u0309a chuy\u00ea\u0309n \u0111\u00f4\u0323ng, \u0111\u00f4\u0301i v\u01a1\u0301i ha\u0300nh kha\u0301ch: s\u00e2n bay \u0111ang chuy\u00ea\u0309n \u0111\u00f4\u0323ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ba\u0300i 2: M\u00f4\u0323t \u00f4 t\u00f4 \u0111i t\u01b0\u0300 Ha\u0300 N\u00f4\u0323i \u0111\u00ea\u0301n Qua\u0309ng Ninh m\u00e2\u0301t 3 ti\u00ea\u0301ng \u0111\u00f4\u0300ng h\u00f4\u0300. Bi\u00ea\u0301t r\u0103\u0300ng qua\u0303ng \u0111\u01b0\u01a1\u0300ng t\u01b0\u0300 Ha\u0300 N\u00f4\u0323i \u0111\u00ea\u0301n Qua\u0309ng Ninh la\u0300 180km. Ti\u0301nh v\u00e2\u0323n t\u00f4\u0301c \u00f4 t\u00f4 cha\u0323y.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L\u01a1\u0300i gia\u0309i: V\u00e2\u0323n t\u00f4\u0301c \u00f4 t\u00f4 cha\u0323y la\u0300: v = s\/t =&gt; v = 180\/3 = 60km\/h<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ba\u0300i 3: A \u0111\u0103\u0323t m\u00f4\u0323t chi\u00ea\u0301c tu\u0301i n\u0103\u0323ng 60kg l\u00ean chi\u00ea\u0301c ba\u0300n 4 ch\u00e2n co\u0301 kh\u00f4\u0301i l\u01b0\u01a1\u0323ng 4kg. Trong \u0111o\u0301 di\u00ea\u0323n ti\u0301ch 1 ch\u00e2n ba\u0300n ti\u00ea\u0301p xu\u0301c v\u01a1\u0301i m\u0103\u0323t \u0111\u00e2\u0301t la\u0300 8cm\u00b2. Ho\u0309i a\u0301p su\u00e2\u0301t m\u00f4\u0303i ch\u00e2n ba\u0300n ta\u0301c du\u0323ng l\u00ean m\u0103\u0323t \u0111\u00e2\u0301t la\u0300 bao nhi\u00eau?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L\u01a1\u0300i gia\u0309i:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A\u0301p l\u01b0\u0323c ca\u0301c ch\u00e2n ba\u0300n ta\u0301c du\u0323ng l\u00ean m\u0103\u0323t \u0111\u00e2\u0301t la\u0300:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">F = P = P1 + P2 = 10m1 + 10m2 = 10 x 60 + 10 x 4 = 640 N<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A\u0301p su\u00e2\u0301t ca\u0301c ch\u00e2n ba\u0300n ta\u0301c du\u0323ng l\u00ean m\u0103\u0323t \u0111\u00e2\u0301t la\u0300:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">p = F \/ S = F \/ 4 x S1 = 640 \/ 4 x 0.0008 = 200 000 N\/m\u00b2<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ba\u0300i 4: Trong ca\u0301c v\u00e2\u0323t sau: v\u00e2\u0323t chi\u0300m hoa\u0300n toa\u0300n trong ch\u00e2\u0301t lo\u0309ng, v\u00e2\u0323t n\u00f4\u0309i hoa\u0300n toa\u0300n trong ch\u00e2\u0301t lo\u0309ng, v\u00e2\u0323t l\u01a1 l\u01b0\u0309ng trong ch\u00e2\u0301t lo\u0309ng l\u01b0\u0323c Acsimet co\u0301 th\u00ea\u0309 ta\u0301c du\u0323ng l\u00ean v\u00e2\u0323t na\u0300o?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L\u01a1\u0300i gia\u0309i: Theo ly\u0301 thuy\u00ea\u0301t l\u01b0\u0323c \u0111\u00e2\u0309y Acsimet, l\u01b0\u0323c Acsimet co\u0301 th\u00ea\u0309 ta\u0301c du\u0323ng l\u00ean ca\u0309 3 v\u00e2\u0323t tr\u00ean.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ba\u0300i 5: Con tr\u00e2u ke\u0301o ca\u0300y v\u01a1\u0301i l\u01b0\u0323c kh\u00f4ng \u0111\u00f4\u0309i b\u0103\u0300ng 80N. N\u01b0\u0309a gi\u01a1\u0300, con tr\u00e2u ca\u0300y \u0111\u01b0\u01a1\u0323c 4,5km. Ti\u0301nh c\u00f4ng, c\u00f4ng su\u00e2\u0301t trung bi\u0300nh.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u0301nh c\u00f4ng va\u0300 c\u00f4ng su\u00e2\u0301t cu\u0309a con tr\u00e2u khi ke\u0301o ca\u0300y.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L\u01a1\u0300i gia\u0309i:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">s = 4,5 km = 4500m<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">t = 0,5h = 1800s<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f4ng cu\u0309a con tr\u00e2u la\u0300: A= F x s = 80 x 4500 = 360000 J<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f4ng su\u00e2\u0301t trung bi\u0300nh cu\u0309a con tr\u00e2u la\u0300: P = A\/t = 360000 \/ 1800 = 200W<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ba\u0300i t\u00e2\u0323p Nhi\u00ea\u0323t ho\u0323c<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ba\u0300i 1: Nho\u0309 m\u00f4\u0323t gio\u0323t n\u01b0\u01a1\u0301c \u0111ang s\u00f4i 100 \u0111\u00f4\u0323 C va\u0300o m\u00f4\u0323t c\u00f4\u0301c n\u01b0\u01a1\u0301c \u00e2\u0301m 60 \u0111\u00f4\u0323 C. Nhi\u00ea\u0323t \u0111\u00f4\u0323 cu\u0309a gio\u0323t n\u01b0\u01a1\u0301c va\u0300 c\u00f4\u0301c n\u01b0\u01a1\u0301c co\u0301 thay \u0111\u00f4\u0309i kh\u00f4ng? N\u00ea\u0301u nhi\u00ea\u0323t thay \u0111\u00f4\u0309i thi\u0300 thay \u0111\u00f4\u0309i th\u00ea\u0301 na\u0300o?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L\u01a1\u0300i gia\u0309i: Nhi\u00ea\u0323t \u0111\u00f4\u0323 cu\u0309a gio\u0323t n\u01b0\u01a1\u0301c va\u0300 c\u00f4\u0301c n\u01b0\u01a1\u0301c \u0111\u00ea\u0300u thay \u0111\u00f4\u0309i trong \u0111o\u0301: nhi\u00ea\u0323t \u0111\u00f4\u0323 gio\u0323t n\u01b0\u01a1\u0301c gia\u0309m, nhi\u00ea\u0323t \u0111\u00f4\u0323 c\u00f4\u0301c n\u01b0\u01a1\u0301c t\u0103ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ba\u0300i 2: M\u00f4\u0323t \u00f4 t\u00f4 cha\u0323y 100km v\u01a1\u0301i l\u01b0\u0323c ke\u0301o kh\u00f4ng \u0111\u00f4\u0309i la\u0300 700N thi\u0300 h\u00ea\u0301t 6 li\u0301t x\u0103ng. Trong \u0111o\u0301 n\u0103ng su\u00e2\u0301t x\u0103ng to\u0309a nhi\u00ea\u0323t la\u0300 4,6x 10^7 J\/kg, kh\u00f4\u0301i l\u01b0\u01a1\u0323ng ri\u00eang cu\u0309a x\u0103ng la\u0300 700 kg\/m3. Ti\u0301nh hi\u00ea\u0323u su\u00e2\u0301t \u0111\u00f4\u0323ng c\u01a1 \u00f4 t\u00f4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L\u01a1\u0300i gia\u0309i:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f4ng cu\u0309a \u00f4 t\u00f4 la\u0300: A = F x s = 700 x 100000 = 70000000 J<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nhi\u00ea\u0323t l\u01b0\u01a1\u0323ng to\u0309a ra: Q= mq = (V x D)x q = 4,6 x 10^7 x 0,006 x 700 = 19,32 x 10^7 J<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Hi\u00ea\u0323u su\u00e2\u0301t cu\u0309a \u00f4 t\u00f4: H = A\/Q \u2248 36%<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ba\u0300i 3: S\u01b0\u0323 thay \u0111\u00f4\u0309i nhi\u00ea\u0323t n\u0103ng khi ga\u0323o \u0111ang xay xa\u0301t va\u0300 ga\u0323o \u0111ang n\u00e2\u0301u trong n\u00f4\u0300i co\u0301 gi\u00f4\u0301ng nhau kh\u00f4ng? Gia\u0309i thi\u0301ch.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Gia\u0309i thi\u0301ch s\u01b0\u0323 thay \u0111\u00f4\u0309i nhi\u00ea\u0323t n\u0103ng khi ga\u0323o \u0111ang xay va\u0300 ga\u0323o \u0111\u01b0\u01a1\u0323c n\u00e2\u0301u trong n\u00f4\u0300i<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L\u01a1\u0300i gia\u0309i: Nhi\u00ea\u0323t n\u0103ng cu\u0309a ga\u0323o khi n\u00e2\u0301u va\u0300 khi xay xa\u0301t \u0111\u00ea\u0300u t\u0103ng trong \u0111o\u0301 nhi\u00ea\u0323t n\u0103ng ga\u0323o n\u00e2\u0301u t\u0103ng do truy\u00ea\u0300n nhi\u00ea\u0323t. Nhi\u00ea\u0323t n\u0103ng ga\u0323o xay xa\u0301t t\u0103ng qua nh\u00e2\u0323n c\u00f4ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">S\u01b0\u0323 h\u00f4\u0303 tr\u01a1\u0323 cu\u0309a Vietlearn<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ba\u0323n mu\u00f4\u0301n ho\u0323c n\u0103\u0301m ch\u0103\u0301c ki\u00ea\u0301n th\u01b0\u0301c V\u00e2\u0323t ly\u0301 8? Ba\u0323n mu\u00f4\u0301n l\u00e2\u0301p l\u00f4\u0303 ho\u0309ng ki\u00ea\u0301n th\u01b0\u0301c? Ba\u0323n mu\u00f4\u0301n n\u00e2ng cao ki\u00ea\u0301n th\u01b0\u0301c? B\u00f4\u0301i r\u00f4\u0301i kh\u00f4ng bi\u00ea\u0301t pha\u0309i la\u0300m sao? Vietlearn co\u0301 th\u00ea\u0309 h\u00f4\u0303 tr\u01a1\u0323 giu\u0301p ba\u0323n gia\u0309i quy\u00ea\u0301t mo\u0323i nhu c\u00e2\u0300u va\u0300 v\u00e2\u0301n \u0111\u00ea\u0300 tr\u00ean.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Vietlearn cung c\u00e2\u0301p l\u00f4\u0323 tri\u0300nh ho\u0323c ri\u00eang bi\u00ea\u0323t cho t\u01b0\u0300ng ca\u0301 nh\u00e2n d\u01b0\u0323a tr\u00ean ca\u0301c ph\u00e2n ti\u0301ch k\u00ea\u0301t qua\u0309 ho\u0323c t\u00e2\u0323p, \u01b0u va\u0300 nh\u01b0\u01a1\u0323c \u0111i\u00ea\u0309m. Ca\u0301c l\u01a1\u0301p ho\u0323c tr\u01b0\u0323c tuy\u00ea\u0301n \u0111a da\u0323ng n\u00f4\u0323i dung ch\u00e2\u0301t l\u01b0\u01a1\u0323ng. Vietlearn t\u01b0\u0323 tin la\u0300 cu\u0303 khi\u0301 chi\u00ea\u0301n l\u01b0\u01a1\u0323c giu\u0301p ba\u0323n b\u01b0\u0301t pha\u0301 trong ho\u0323c t\u00e2\u0323p.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kho t\u00e0i li\u1ec7u <a href=\"https:\/\/www.vietlearn.org\" data-internallinksmanager029f6b8e52c=\"2\" title=\"Vietlearn\" rel=\"nofollow\">h\u1ecdc t\u1eadp<\/a> Mi\u1ec5n Ph\u00ed \u2013 Vietlearn<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tham kha\u0309o <a href=\"https:\/\/www.vietlearn.org\" data-internallinksmanager029f6b8e52c=\"2\" title=\"Vietlearn\" rel=\"nofollow\">Gia s\u01b0<\/a> K12 cu\u0309a Vietlearn. Kho\u0301a ho\u0323c K12 kh\u00f4ng chi\u0309 co\u0301 m\u00f4n V\u00e2\u0323t Ly\u0301 ma\u0300 co\u0300n co\u0301 ca\u0301c m\u00f4n ho\u0323c kha\u0301c nh\u01b0: Ho\u0301a ho\u0323c, Toa\u0301n ho\u0323c, Ti\u00ea\u0301ng Anh. Ca\u0301c ba\u0323n ho\u0323c sinh t\u01b0\u0300 l\u01a1\u0301p 1 \u0111\u00ea\u0301n l\u01a1\u0301p 12 \u0111\u00ea\u0300u co\u0301 th\u00ea\u0309 tham gia tra\u0309i nghi\u00ea\u0323m kho\u0301a ho\u0323c tr\u01b0\u0323c tuy\u00ea\u0301n na\u0300y. Vietlearn kh\u0103\u0309ng \u0111i\u0323nh nh\u01b0\u0303ng gia\u0301 tri\u0323 Vietlearn \u0111em la\u0323i se\u0303 khi\u00ea\u0301n ca\u0301c ba\u0323n pha\u0309i b\u00e2\u0301t ng\u01a1\u0300. Vietlearn t\u01b0\u0323 tin giu\u0301p ca\u0301c ba\u0323n d\u00ea\u0303 da\u0300ng n\u00e2ng \u0111i\u00ea\u0309m, ch\u00e2\u0301t l\u01b0\u01a1\u0323ng k\u00ea\u0301t qua\u0309 ho\u0323c t\u00e2\u0323p trong th\u01a1\u0300i gian ng\u0103\u0301n nh\u00e2\u0301t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L\u01a1\u0300i k\u00ea\u0301t<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Vietlearn hy vo\u0323ng v\u01a1\u0301i ba\u0300i vi\u00ea\u0301t tr\u00ean \u0111a\u0303 cung c\u00e2\u0301p cho ba\u0323n \u0111o\u0323c ca\u0301c th\u00f4ng tin h\u01b0\u0303u i\u0301ch, c\u00e2\u0300n thi\u00ea\u0301t. Ghe\u0301 qua blog cu\u0309a Vietlearn \u0111\u00ea\u0309 c\u00e2\u0323p nh\u00e2\u0323t ca\u0301c ki\u00ea\u0301n th\u01b0\u0301c khoa ho\u0323c, ngoa\u0323i ng\u01b0\u0303, bi\u0301 ki\u0301p ho\u0323c t\u00e2\u0323p m\u01a1\u0301i nh\u00e2\u0301t va\u0300 kho ta\u0300i li\u00ea\u0323u kh\u00f4\u0309ng l\u00f4\u0300 ch\u00e2\u0301t l\u01b0\u01a1\u0323ng. Vietlearn lu\u00f4n s\u0103\u0303n sa\u0300ng \u0111\u00f4\u0300ng ha\u0300nh cu\u0300ng ca\u0301c ba\u0323n ho\u0323c sinh trong qua\u0301 tri\u0300nh chinh phu\u0323c tri th\u01b0\u0301c. Mo\u0323i kho\u0301 kh\u0103n hay th\u0103\u0301c m\u0103\u0301c c\u00e2\u0300n<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"<p>Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn Ho\u0323c sinh \u0111\u01b0\u01a1\u0323c la\u0300m quen v\u01a1\u0301i m\u00f4n ho\u0323c V\u00e2\u0323t ly\u0301 b\u0103\u0301t \u0111\u00e2\u0300u t\u01b0\u0300 n\u0103m l\u01a1\u0301p 6. M\u00f4n ho\u0323c na\u0300y se\u0303 \u0111\u00f4\u0300ng ha\u0300nh cu\u0300ng ca\u0301c ba\u0323n ho\u0323c sinh cho \u0111\u00ea\u0301n n\u0103m l\u01a1\u0301p 12. \u01a0\u0309 m\u00f4\u0303i l\u01a1\u0301p ho\u0323c, ca\u0301c em se\u0303 \u0111\u01b0\u01a1\u0323c ti\u00ea\u0301p xu\u0301c v\u01a1\u0301i ca\u0301c n\u00f4\u0323i dung ki\u00ea\u0301n th\u01b0\u0301c kha\u0301c [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[4,7],"tags":[],"class_list":["post-2631","post","type-post","status-publish","format-standard","hentry","category-trung-hoc","category-vat-ly"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/2631","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=2631"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/2631\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=2631"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=2631"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=2631"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}