9979 x 10^8 m/s,如何转换到 km/hr?
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9979 x 10^8 m/s,如何转换到 km/hr?
2.9979 × 10^8 m/s
= 2.9979 × 10^8 m ÷ 1 s
= 2.9979 × 10^5 km ÷ 1/3600 hr
=1.079 × 10^9 km/h
= 2.9979 × 10^8 m ÷ 1 s
= 2.9979 × 10^5 km ÷ 1/3600 hr
=1.079 × 10^9 km/h