Question

calculati distanta de la soare la planeta marte stiind ca lumina o parcurge in aproximativ 12 min.40 s

Answer 1

$d = v \times t \\ viteza \: luminii = 3 \times {10}^{8} \\ t = 12 \times 60 + 40 = 760 \: secunde \\ d = 720 \times 3 \times {10}^{8} = 216 \times {10}^{9} metri$