Question

Preciso pra hoje gente, me respondam por favor

Answer 1

$Sabemos \ que:\\\\v = 800km/s\\s = 150.000.000km = 1,5*10^8km\\\\Precisamos \ da \ velocidade \ em \ km/h \ :\\\\1h = 60min*60s = 3600s\\\\\frac{800km}{v}=\frac{1s}{3600s} \\v = 3600*800\\v = 2.880.000\\v = 2,88*10^6\\\\Desta forma:\\\\s = vt\\1,5*10^8 = 2,88*10^6 * t\\t = \frac{1,5*10^8}{2,88*10^6}\\ t = 0.52*10^{8-6}\\t = 0.52*10^2\\t = 52h$