Question

PLZZ HELP I'M GIVING 30 POINTS!!!!!

The speed of light is approximately 3*10^5 km/s. If a star that is 7.836*10^17 kilometers away from Earth is born, how long after it is born would we see it from Earth? Give your answer in scientific notation, rounding to 1 significant figure.

Answer 1

Scientific notation: t = 2.333 × 10³ s

Standard notation: t = 2 333 s

time = distance/velocity

Answer 2

i don't know I'm realy sorry but u will get eventually