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hix ! sai het' roi !
khi dua len cao thi` 1s dong` ho` cham. h/R
khi dua xuong' thi` 1s dong` ho` cham. h/2R
voi' R= 6400km
khi tang nhiet. do. thi` 1s dong` ho cham {&delta (T)}/2
khi giam nhiet. do. thi` 1s dong ho tang {&delta (T)}/2
hj ! to' doan' thui ! neu sai moi. nguoi nt cho to' hêy !
khi dua len cao thi` 1s dong` ho` cham. h/R
khi dua xuong' thi` 1s dong` ho` cham. h/2R
voi' R= 6400km
khi tang nhiet. do. thi` 1s dong` ho cham {&delta (T)}/2
khi giam nhiet. do. thi` 1s dong ho tang {&delta (T)}/2
hj ! to' doan' thui ! neu sai moi. nguoi nt cho to' hêy !