Answer:
It will take 500 seconds before the scientist sees the solar flare
Explanation:
From the question, the Earth-Sun distance is 1.5×10¹¹ m and the speed of light is approximately 3×10⁸ m/s.
Now, we are to determine how long it will take before a scientist sees a solar flare after it has occurred. That is, we are to determine time.
From the formula
Speed = Distance / Time
Time = Distance / Speed
From the question,
Distance = 1.5×10¹¹ m
and speed = 3×10⁸ m/s
Therefore,
Time = 1.5×10¹¹ m / 3×10⁸ m/s
∴ Time = 0.5 × 10³ s
Time = 500 s
Hence, it will take 500 seconds before the scientist sees the solar flare.