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datnguyen19
2 năm trước
Vận tốc ánh sáng khi truyền trong không khí có giá trị bằng 300 000 000 m/s khoảng cách từ mặt trời đến trái đất khoảng 150 000 000 km hỏi thời gian từ ánh sáng truyền tới mặt đất là mấy giây(nhanh giùm mik nha🥰🥺)
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