Question

The star Sirius is about 8.1 x 10^13 km from
the Earth. Assuming that light travels at
a speed of 3.0 × 10^5km/s, find how long
light from Sirius takes to reach the Earth
(Give your answer in seconds).​

Answer 1

Answer:

2.7x10⁸ seconds

Step-by-step explanation:

(looking at the attachment)

Speed = $\frac{distance}{time\\}$

.: time = $\frac{distance}{speed\\}$

time = $\frac{8.1x10^1^3}{3.0x10^5}$

time = 2.7x10⁸ seconds