Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn<\/p>\n\n\n\n
Trong cu\u1ed9c s\u1ed1ng, ch\u00fang ta v\u1eabn th\u01b0\u1eddng hay nh\u1eafc \u0111\u1ebfn \u00e1p su\u1ea5t l\u00e0 g\u00ec. R\u1ea5t nhi\u1ec1u l\u0129nh v\u1ef1c \u0111\u1ec1u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ebfn \u0111i\u1ec1u n\u00e0y. Tuy nhi\u00ean, \u0111\u1ed1i v\u1edbi nhi\u1ec1u ng\u01b0\u1eddi th\u00ec c\u1ee5m t\u1eeb \u00e1p su\u1ea5t v\u1eabn c\u00f2n kh\u00e1 xa l\u1ea1. V\u1eady \u00fd ngh\u0129a c\u1ee7a c\u1ee5m t\u1eeb n\u00e0y l\u00e0 g\u00ec? N\u00f3 c\u00f3 quan tr\u1ecdng \u0111\u1ed1i v\u1edbi cu\u1ed9c s\u1ed1ng c\u1ee7a ch\u00fang ta hay kh\u00f4ng? B\u00e0i vi\u1ebft ng\u00e0y h\u00f4m nay, ch\u00fang ta h\u00e3y c\u00f9ng nhau t\u00ecm hi\u1ec3u v\u1ec1 ch\u1ee7 \u0111\u1ec1 n\u00e0y nh\u00e9! M\u1ed9t b\u00e0i h\u1ecdc trong b\u1ed9 m\u00f4n v\u1eadt l\u00fd c\u1ee7a c\u00e1c em c\u0169ng \u0111\u00e3 \u0111\u1ec1 c\u1eadp \u0111\u1ebfn \u00e1p su\u1ea5t.<\/p>\n\n\n\n
C\u00e2u h\u1ecfi v\u1ec1 \u00e1p su\u1ea5t<\/p>\n\n\n\n
\u00c1p su\u1ea5t l\u00e0 g\u00ec?<\/p>\n\n\n\n
\u00c1p su\u1ea5t l\u00e0 g\u00ec \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn l\u00e0 m\u1ed9t \u0111\u1ea1i l\u01b0\u1ee3ng v\u1eadt l\u00fd. Tuy nhi\u00ean, \u0111\u1ea1i l\u01b0\u1ee3ng n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong r\u1ea5t nhi\u1ec1u l\u0129nh v\u1ef1c. \u0110\u1ecbnh ngh\u0129a v\u1ec1 \u00e1p su\u1ea5t ch\u00ednh l\u00e0 \u0111\u1ed9 l\u1edbn c\u1ee7a \u00e1p l\u1ef1c khi b\u1ecb ch\u00e8n \u00e9p tr\u00ean m\u1ed9t di\u1ec7n t\u00edch nh\u1ea5t \u0111\u1ecbnh. Tuy nhi\u00ean \u0111\u1ec3 hi\u1ec3u v\u1ec1 \u0111i\u1ec1u n\u00e0y ch\u00fang ta c\u0169ng c\u1ea7n ph\u1ea3i hi\u1ec3u \u00e1p l\u1ef1c l\u00e0 g\u00ec? \u00c1p l\u1ef1c ch\u00ednh l\u00e0 l\u1ef1c \u00e9p c\u00f3 ph\u01b0\u01a1ng vu\u00f4ng g\u00f3c v\u1edbi b\u1ec1 m\u1eb7t b\u1ecb \u00e9p. \u0110\u1ec3 c\u00f3 th\u1ec3 d\u1ec5 hi\u1ec3u h\u01a1n, ch\u00fang ta c\u1ea7n ph\u1ea3i x\u00e2u chu\u1ed7i hai \u0111\u1ecbnh ngh\u0129a n\u00e0y l\u1ea1i v\u1edbi nhau.<\/p>\n\n\n\n
N\u00f3i m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n, \u00e1p su\u1ea5t \u0111\u01b0\u1ee3c sinh ra khi c\u00f3 m\u1ed9t l\u1ef1c t\u00e1c d\u1ee5ng vu\u00f4ng g\u00f3c l\u00ean b\u1ec1 m\u1eb7t ti\u1ebfp x\u00fac. L\u1ef1c t\u00e1c d\u1ee5ng \u1edf \u0111\u00e2y c\u00f3 th\u1ec3 l\u00e0 v\u1eadt, ho\u1eb7c b\u1ea5t c\u1ee9 nh\u1eefng g\u00ec c\u00f3 th\u1ec3 t\u1ea1o ra l\u1ef1c. Khi ch\u00fang ta th\u1ef1c hi\u1ec7n c\u00e1c th\u00ed nghi\u1ec7m tr\u00ean l\u1edbp, c\u00e1c em c\u00f3 th\u1ec3 s\u1ebd th\u1ea5y r\u00f5 \u0111\u01b0\u1ee3c \u0111i\u1ec1u n\u00e0y h\u01a1n. \u0110\u01a1n v\u1ecb \u0111\u1ec3 \u0111o \u00e1p su\u1ea5t theo h\u1ec7 \u0111o l\u01b0\u1eddng qu\u1ed1c t\u1ebf l\u00e0 N\/m2. \u0110\u01a1n v\u1ecb n\u00e0y \u0111\u01b0\u1ee3c l\u1ea5y t\u1eeb \u0111\u01a1n v\u1ecb \u0111o l\u1ef1c l\u00e0 Newton chia cho \u0111\u01a1n v\u1ecb \u0111o di\u1ec7n t\u00edch ti\u1ebfp x\u00fac l\u00e0 m2. Gi\u1ed1ng nh\u01b0 \u0111\u1ecbnh ngh\u0129a, \u0111\u01a1n v\u1ecb n\u00e0y \u0111\u01b0\u1ee3c h\u00ecnh th\u00e0nh t\u1eeb hai y\u1ebfu t\u1ed1 t\u1ea1o n\u00ean \u00e1p su\u1ea5t.<\/p>\n\n\n\n
Tr\u00ean th\u1ef1c t\u1ebf, c\u00f3 r\u1ea5t nhi\u1ec1u \u0111\u01a1n v\u1ecb \u0111o \u00e1p su\u1ea5t l\u00e0 g\u00ec kh\u00e1c nhau \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng. Tuy nhi\u00ean, \u0111\u01a1n v\u1ecb n\u00e0y v\u1eabn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng th\u00f4ng d\u1ee5ng nh\u1ea5t. C\u00e1c \u0111\u01a1n v\u1ecb \u0111o \u00e1p su\u1ea5t theo v\u00f9ng nh\u01b0 Ch\u00e2u M\u1ef9 (PSI), Ch\u00e2u \u00c1 (Pa) v\u00e0 Ch\u00e2u \u00c2u (Bar). C\u00e1c em ho\u00e0n to\u00e0n c\u00f3 th\u1ec3 quy \u0111\u1ed5i sang cho nhau. Tr\u00ean c\u00e1c thi\u1ebft b\u1ecb \u0111o \u00e1p su\u1ea5t, ng\u01b0\u1eddi ta c\u0169ng \u0111\u1ec3 h\u1ec7 chuy\u1ec3n \u0111\u1ed5i \u0111\u01a1n v\u1ecb. N\u00ean ch\u00fang ta ho\u00e0n to\u00e0n c\u00f3 th\u1ec3 y\u00ean t\u00e2m khi s\u1eed d\u1ee5ng m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ee9c t\u1ea1p h\u00f3a vi\u1ec7c quy \u0111\u1ed5i.<\/p>\n\n\n\n
C\u00f4ng th\u1ee9c t\u00ednh \u00e1p su\u1ea5t<\/p>\n\n\n\n
L\u00e0 m\u1ed9t \u0111\u1ea1i l\u01b0\u1ee3ng v\u1eadt l\u00fd, \u00e1p su\u1ea5t c\u0169ng c\u00f3 nh\u1eefng c\u00f4ng th\u1ee9c \u0111\u1ec3 t\u00ednh \u0111\u1ed9 l\u1edbn. Tuy nhi\u00ean, \u0111\u1ed1i v\u1edbi t\u1eebng ch\u1ea5t, c\u00f4ng th\u1ee9c t\u00ednh n\u00e0y c\u00f3 s\u1ef1 thay \u0111\u1ed5i kh\u00e1c nhau. Trong c\u00e1c m\u00f4i tr\u01b0\u1eddng ch\u1ea5t r\u1eafn, l\u1ecfng, kh\u00ed, \u0111i\u1ec1u n\u00e0y \u0111\u1ec1u c\u00f3 th\u1ec3 x\u1ea3y ra. Ch\u00ednh v\u00ec v\u1eady, khi t\u00ednh to\u00e1n ch\u00fang ta c\u1ea7n v\u1eadn d\u1ee5ng \u0111\u00fang c\u00f4ng th\u1ee9c. C\u00f3 th\u1ec3 trong ch\u01b0\u01a1ng tr\u00ecnh v\u1eadt l\u00fd 8, c\u00e1c em ch\u1ec9 c\u1ea7n d\u00f9ng \u0111\u1ebfn c\u00f4ng th\u1ee9c t\u00ednh \u00e1p su\u1ea5t ch\u1ea5t r\u1eafn. Tuy nhi\u00ean, trong c\u00e1c ch\u01b0\u01a1ng tr\u00ecnh h\u1ecdc cao h\u01a1n. C\u00e1c em s\u1ebd c\u1ea7n t\u00ednh th\u00eam \u00e1p su\u1ea5t ch\u1ea5t l\u1ecfng, ho\u1eb7c ch\u1ea5t kh\u00ed t\u00f9y thu\u1ed9c \u0111\u1ec1 b\u00e0i.<\/p>\n\n\n\n
C\u00f4ng th\u1ee9c \u00e1p su\u1ea5t l\u00e0 g\u00ec?<\/p>\n\n\n\n
\u00c1p su\u1ea5t \u0111\u01b0\u1ee3c g\u00e2y ra b\u1edfi ch\u1ea5t r\u1eafn l\u00e0 \u00e1p l\u1ef1c t\u00e1c d\u1ee5ng l\u00ean m\u1ed9t \u0111\u01a1n v\u1ecb di\u1ec7n t\u00edch x\u00e1c \u0111\u1ecbnh. \u00c1p l\u1ef1c n\u00e0y ch\u1ec9 t\u00e1c d\u1ee5ng l\u1ef1c l\u00ean v\u1eadt \u1edf b\u1ec1 m\u1eb7t ti\u1ebfp x\u00fac. T\u1eeb \u0111\u00f3 ch\u00fang ta c\u00f3 th\u1ec3 suy ra c\u00f4ng th\u1ee9c t\u00ednh \u00e1p su\u1ea5t l\u00e0 g\u00ec? C\u00f4ng th\u1ee9c nh\u01b0 sau: P = F\/S. Trong \u0111\u00f3:<\/p>\n\n\n\n
P l\u00e0 k\u00fd hi\u1ec7u c\u1ee7a \u00e1p su\u1ea5t. C\u00f3 \u0111\u01a1n v\u1ecb l\u00e0 N\/m2.<\/p>\n\n\n\n
F l\u00e0 k\u00fd hi\u1ec7u c\u1ee7a l\u1ef1c t\u00e1c d\u1ee5ng. \u0110\u01a1n v\u1ecb l\u00e0 N.<\/p>\n\n\n\n
S l\u00e0 k\u00fd hi\u1ec7u c\u1ee7a di\u1ec7n t\u00edch ti\u1ebfp x\u00fac. \u0110\u01a1n v\u1ecb l\u00e0 m2.<\/p>\n\n\n\n
\u0110\u1ed1i v\u1edbi \u00e1p su\u1ea5t ch\u1ea5t l\u1ecfng ch\u00fang ta kh\u00f4ng \u0111\u1ec1 c\u1eadp \u0111\u1ebfn c\u00f4ng th\u1ee9c t\u00ednh. \u00c1p su\u1ea5t ch\u1ea5t l\u1ecfng l\u00e0 m\u1ed9t l\u1ef1c \u0111\u1ea9y c\u1ee7a ch\u1ea5t l\u1ecfng truy\u1ec1n trong c\u00e1c \u0111\u01b0\u1eddng \u1ed1ng. L\u1ef1c \u0111\u1ea9y c\u00e0ng nhanh th\u00ec \u00e1p su\u1ea5t c\u00e0ng m\u1ea1nh. L\u1ef1c \u0111\u1ea9y c\u1ee7a ch\u1ea5t l\u1ecfng c\u00e0ng y\u1ebfu th\u00ec \u00e1p su\u1ea5t c\u00e0ng th\u1ea5p. Ch\u1ea5t l\u1ecfng \u1edf \u0111\u00e2y c\u00f3 th\u1ec3 l\u00e0 n\u01b0\u1edbc, d\u1ea7u\u2026<\/p>\n\n\n\n
\u00c1p su\u1ea5t ch\u1ea5t kh\u00ed hay c\u00f2n g\u1ecdi l\u00e0 \u00e1p l\u1ef1c kh\u00ed. Trong th\u1ef1c t\u1ebf, m\u00e1y n\u00e9n h\u01a1i ch\u00ednh l\u00e0 v\u00ed d\u1ee5 d\u1ec5 hi\u1ec3u nh\u1ea5t cho \u00e1p su\u1ea5t ch\u1ea5t kh\u00ed. Khi ch\u1ea5t kh\u00ed \u0111\u01b0\u1ee3c n\u00e9n l\u1ea1i t\u1ea1o ra m\u1ed9t \u00e1p su\u1ea5t l\u1edbn \u0111\u00e8 l\u00ean b\u1ec1 m\u1eb7t c\u1ee7a \u1ed1ng n\u00e9n. \u00c1p su\u1ea5t n\u00e0y r\u1ea5t l\u1edbn, ng\u01b0\u1eddi ta c\u00f3 th\u1ec3 d\u00f9ng \u0111\u1ec3 n\u00e2ng v\u1eadt ho\u1eb7c d\u00f9ng trong nhi\u1ec1u ho\u1ea1t \u0111\u1ed9ng kh\u00e1c nhau. C\u00f4ng th\u1ee9c \u0111\u1ec3 t\u00ednh \u00e1p su\u1ea5t ch\u1ea5t kh\u00ed nh\u01b0 sau: P = d.h. Trong \u0111\u00f3:<\/p>\n\n\n\n
P: L\u00e0 k\u00fd hi\u1ec7u c\u1ee7a \u00e1p su\u1ea5t. C\u00f3 \u0111\u01a1n v\u1ecb l\u00e0 N\/m2.<\/p>\n\n\n\n
d: l\u00e0 tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang c\u1ee7a ch\u1ea5t l\u1ecfng \u0111\u01b0\u1ee3c t\u00ednh \u00e1p su\u1ea5t. \u0110\u01a1n v\u1ecb N\/m2.<\/p>\n\n\n\n
h: l\u00e0 chi\u1ec1u cao c\u1ee7a c\u1ed9t ch\u1ea5t kh\u00ed. \u0110\u01a1n v\u1ecb m.<\/p>\n\n\n\n
\u0110\u00e2y ch\u00ednh l\u00e0 nh\u1eefng c\u00f4ng th\u1ee9c c\u00e1c em c\u1ea7n ghi nh\u1edb v\u00e0 v\u1eadn d\u1ee5ng trong c\u00e1c b\u00e0i t\u1eadp. T\u1eebng tr\u01b0\u1eddng h\u1ee3p \u0111\u1ec1 b\u00e0i kh\u00e1c nhau, c\u00e1c em s\u1ebd s\u1eed d\u1ee5ng c\u00f4ng th\u1ee9c kh\u00e1c nhau. Tuy nhi\u00ean, trong ch\u01b0\u01a1ng tr\u00ecnh v\u1eadt l\u00fd 8, c\u00e1c b\u00e0i t\u1eadp s\u1ebd d\u1ec5 h\u01a1n v\u00e0 ch\u1ec9 \u00e1p d\u1ee5ng c\u00f4ng th\u1ee9c \u0111\u1ea7u ti\u00ean.<\/p>\n\n\n\n
M\u1ed9t s\u1ed1 c\u00e1ch \u0111\u1ec3 l\u00e0m t\u0103ng, gi\u1ea3m \u00e1p su\u1ea5t l\u00e0 g\u00ec?<\/p>\n\n\n\n
Trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, ch\u00fang ta c\u1ea7n ph\u1ea3i t\u0103ng, gi\u1ea3m \u0111\u1ed9 l\u1edbn c\u1ee7a \u00e1p su\u1ea5t x\u1ea3y ra. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng trong b\u00e0i t\u1eadp v\u1eadn d\u1ee5ng ho\u1eb7c cu\u1ed9c s\u1ed1ng h\u1eb1ng ng\u00e0y. V\u1eady \u0111\u00e2u l\u00e0 c\u00e1ch \u0111\u1ec3 l\u00e0m t\u0103ng ho\u1eb7c gi\u1ea3m \u00e1p su\u1ea5t? C\u00e1c em h\u00e3y c\u00f9ng t\u00ecm hi\u1ec3u ngay d\u01b0\u1edbi \u0111\u00e2y nh\u00e9!<\/p>\n\n\n\n
N\u1ed3i \u00e1p su\u1ea5t hay \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng<\/p>\n\n\n\n
D\u1ef1a theo \u0111\u1ecbnh ngh\u0129a sinh ra \u00e1p su\u1ea5t ch\u00fang ta c\u00f3 th\u1ec3 thay \u0111\u1ed5i c\u00e1c y\u1ebfu t\u1ed1 \u0111\u1ec3 \u0111em \u0111\u1ebfn k\u1ebft qu\u1ea3 nh\u01b0 \u00fd. C\u00e1c t\u0103ng \u00e1p su\u1ea5t:<\/p>\n\n\n\n
T\u0103ng \u00e1p l\u1ef1c t\u00e1c \u0111\u1ed9ng nh\u01b0ng v\u1eabn gi\u1eef nguy\u00ean di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t b\u1ecb \u00e9p.<\/p>\n\n\n\n
T\u0103ng l\u1ef1c t\u00e1c \u0111\u1ed9ng theo h\u01b0\u1edbng vu\u00f4ng g\u00f3c v\u00e0 gi\u1ea3m di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t b\u1ecb \u00e9p.<\/p>\n\n\n\n
T\u0103ng di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t b\u1ecb \u00e9p v\u00e0 gi\u1eef nguy\u00ean \u00e1p l\u1ef1c.<\/p>\n\n\n\n
C\u00e1ch \u0111\u1ec3 l\u00e0m gi\u1ea3m \u00e1p su\u1ea5t:<\/p>\n\n\n\n
Gi\u1ea3m \u00e1p l\u1ef1c t\u00e1c \u0111\u1ed9ng, \u0111\u1ed3ng th\u1eddi gi\u1eef nguy\u00ean di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t b\u1ecb \u00e9p.<\/p>\n\n\n\n
Gi\u1ea3m \u00e1p l\u1ef1c v\u00e0 gi\u1ea3m di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t b\u1ecb \u00e9p.<\/p>\n\n\n\n
Gi\u1ea3m di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t b\u1ecb \u00e9p v\u00e0 gi\u1eef nguy\u00ean \u00e1p l\u1ef1c.<\/p>\n\n\n\n
Tr\u00ean \u0111\u00e2y ch\u00ednh l\u00e0 nh\u1eefng c\u00e1ch \u0111\u1ec3 t\u0103ng gi\u1ea3m \u00e1p su\u1ea5t trong c\u00e1c tr\u01b0\u1eddng h\u1ee3p t\u00e1c d\u1ee5ng. C\u00e1c em n\u00ean ghi nh\u1edb nh\u1eefng c\u00e1ch n\u00e0y \u0111\u1ec3 c\u00f3 th\u1ec3 l\u00e0m b\u00e0i t\u1eadp v\u00ed d\u1ee5 v\u1eadn d\u1ee5ng t\u1ed1t h\u01a1n.<\/p>\n\n\n\n
\u1ee8ng d\u1ee5ng c\u1ee7a \u00e1p su\u1ea5t trong th\u1ef1c t\u1ebf<\/p>\n\n\n\n
\u00c1p su\u1ea5t c\u00f3 nhi\u1ec1u \u1ee9ng d\u1ee5ng v\u00e0 vai tr\u00f2 trong cu\u1ed9c s\u1ed1ng h\u1eb1ng ng\u00e0y. Ng\u01b0\u1eddi ta \u1ee9ng d\u1ee5ng \u0111i\u1ec1u n\u00e0y v\u00e0o trong c\u00f4ng nghi\u1ec7p, m\u00e1y m\u00f3c. Ch\u00fang ta c\u00f3 th\u1ec3 b\u1eaft g\u1eb7p \u00e1p su\u1ea5t \u1edf r\u1ea5t nhi\u1ec1u n\u01a1i trong cu\u1ed9c s\u1ed1ng. N\u00f3 c\u00f3 m\u1eb7t t\u1ea1i tr\u01b0\u1eddng h\u1ecdc, b\u1ec7nh vi\u1ec7n, m\u00e1y bay,\u2026 v\u00e0 ngay c\u1ea3 trong ch\u00ednh c\u01a1 th\u1ec3 ch\u00fang ta. M\u1ed9t s\u1ed1 m\u00e1y m\u00f3c ch\u00fang ta s\u1eed d\u1ee5ng r\u1ea5t nhi\u1ec1u nh\u01b0 m\u00e1y b\u01a1m r\u1eeda xe, m\u00e1y n\u00e9n kh\u00ed,\u2026 \u0110\u00e2y \u0111\u1ec1u l\u00e0 nh\u1eefng k\u1ebft qu\u1ea3 c\u1ee7a c\u00e2u h\u1ecfi \u00e1p su\u1ea5t l\u00e0 g\u00ec.<\/p>\n\n\n\n
Trong c\u00e1c c\u00f4ng tr\u00ecnh x\u00e2y d\u1ef1ng c\u0169ng c\u00f3 s\u1ef1 xu\u1ea5t hi\u1ec7n c\u1ee7a \u0111i\u1ec1u n\u00e0y. Khi ch\u00fang ta \u0111\u00f3ng c\u1ecdc v\u00e0o \u0111\u1ea5t \u0111\u1ec3 l\u00e0m c\u1ed9t nh\u00e0 c\u0169ng c\u00f3 s\u1ef1 x\u1ea3y ra. Trong l\u0129nh v\u1ef1c y t\u1ebf, \u00e1p su\u1ea5t ch\u1ea5t r\u1eafn \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng trong vi\u1ec7c h\u00f4 h\u1ea5p nh\u00e2n t\u1ea1o. \u0110\u00e2y \u0111\u1ec1u l\u00e0 nh\u1eefng hi\u1ec7n t\u01b0\u1ee3ng th\u01b0\u1eddng ng\u00e0y ch\u00fang ta b\u1eaft g\u1eb7p. Tuy nhi\u00ean, n\u1ebfu kh\u00f4ng h\u1ecdc v\u00e0 t\u00ecm hi\u1ec3u ch\u00fang ta s\u1ebd kh\u00f4ng bi\u1ebft \u0111\u1ebfn \u0111i\u1ec1u n\u00e0y.<\/p>\n\n\n\n
Ngo\u00e0i nh\u1eefng v\u00ed d\u1ee5 ch\u00fang t\u00f4i \u0111\u00e3 \u0111\u1ec1 c\u1eadp tr\u00ean \u0111\u00e2y c\u00f2n r\u1ea5t nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p kh\u00e1c. C\u00e1c em ho\u00e0n to\u00e0n c\u00f3 th\u1ec3 t\u1ef1 t\u00ecm ki\u1ebfm v\u00e0 l\u00fd gi\u1ea3i \u0111\u1ec3 c\u00f3 th\u1ec3 m\u1edf mang ki\u1ebfn th\u1ee9c nhi\u1ec1u h\u01a1n. Nh\u1eefng v\u00ed d\u1ee5 n\u00e0y s\u1ebd r\u1ea5t h\u1eefu \u00edch trong nh\u1eefng b\u00e0i t\u1eadp v\u1eadn d\u1ee5ng th\u1ef1c t\u1ebf c\u1ee7a c\u00e1c em. \u1ee8ng d\u1ee5ng c\u1ee7a \u00e1p su\u1ea5t trong cu\u1ed9c s\u1ed1ng th\u01b0\u1eddng ng\u00e0y \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng. H\u1ecdc v\u1eadt l\u00fd c\u00e1c em s\u1ebd \u0111\u01b0\u1ee3c hi\u1ec3u bi\u1ebft nhi\u1ec1u h\u01a1n v\u1ec1 c\u00e1c hi\u1ec7n t\u01b0\u1ee3ng trong cu\u1ed9c s\u1ed1ng. \u0110\u00f4i khi nh\u1eefng \u0111i\u1ec1u c\u00e1c em th\u1ea5y ch\u01b0a h\u1eb3n l\u00e0 t\u1ea5t c\u1ea3 nh\u1eefng g\u00ec \u0111ang x\u1ea3y ra v\u1edbi v\u1eadt.<\/p>\n\n\n\n
H\u1ec7 th\u1ed1ng \u00e1p su\u1ea5t th\u01b0\u1eddng s\u1eed d\u1ee5ng<\/p>\n\n\n\n
Tr\u00ean \u0111\u00e2y l\u00e0 nh\u1eefng ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n<\/a> v\u00e0 v\u00ed d\u1ee5 v\u1ec1 \u00e1p su\u1ea5t l\u00e0 g\u00ec. Hy v\u1ecdng nh\u1eefng \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 gi\u00fap \u00edch cho c\u00e1c em trong vi\u1ec7c h\u1ecdc t\u1eadp<\/a> v\u00e0 cu\u1ed9c s\u1ed1ng. H\u00e3y ghi ch\u00e9p l\u1ea1i nh\u1eefng c\u00f4ng th\u1ee9c c\u1ea7n nh\u1edb v\u00e0 c\u00e1ch l\u00e0m b\u00e0i. V\u00ed d\u1ee5 v\u1ec1 c\u00e1c tr\u01b0\u1eddng h\u1ee3p c\u0169ng r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi d\u1ea1ng b\u00e0i t\u1eadp th\u1ef1c t\u1ebf. C\u00e1c em n\u00ean nh\u1edb v\u00e0 hi\u1ec3u k\u1ef9 v\u1ec1 ch\u1ee7 \u0111\u1ec1 n\u00e0y \u0111\u1ec3 c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111i\u1ec3m cao tr\u00ean l\u1edbp. C\u1ea3m \u01a1n c\u00e1c em \u0111\u00e3 \u0111\u00f3n \u0111\u1ecdc b\u00e0i vi\u1ebft ng\u00e0y h\u00f4m nay.<\/p>\n\n\n\n C\u00e1c em c\u00f3 th\u1ec3 tham kh\u1ea3o th\u00eam v\u1ec1 l\u1ef1c ma s\u00e1t t\u1ea1i \u0111\u00e2y. Nh\u1eefng b\u00e0i vi\u1ebft v\u1ec1 ch\u1ee7 \u0111\u1ec1 v\u1eadt l\u00fd 8 \u0111ang \u0111\u01b0\u1ee3c \u0111\u0103ng t\u1ea3i tr\u00ean trang ch\u1ee7.<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":" Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn Trong cu\u1ed9c s\u1ed1ng, ch\u00fang ta v\u1eabn th\u01b0\u1eddng hay nh\u1eafc \u0111\u1ebfn \u00e1p su\u1ea5t l\u00e0 g\u00ec. R\u1ea5t nhi\u1ec1u l\u0129nh v\u1ef1c \u0111\u1ec1u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ebfn \u0111i\u1ec1u n\u00e0y. Tuy nhi\u00ean, \u0111\u1ed1i v\u1edbi nhi\u1ec1u ng\u01b0\u1eddi th\u00ec c\u1ee5m t\u1eeb \u00e1p su\u1ea5t v\u1eabn c\u00f2n kh\u00e1 xa l\u1ea1. V\u1eady \u00fd ngh\u0129a c\u1ee7a c\u1ee5m t\u1eeb n\u00e0y l\u00e0 […]<\/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-1245","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\/1245","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=1245"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/1245\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=1245"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=1245"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=1245"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}