As its closest approach, the distance between the Mars and the Earth is found to be 60 million km. W — Atomic Structure Chemistry Question
Question
As its closest approach, the distance between the Mars and the Earth is found to be 60 million km. When the planets are at this closest distance, how long would it take to send a radio massage from a space probe of Mars of Earth?
Answer: B
💡 Solution & Explanation
Time $t = \frac{\text{distance}}{\text{speed}} = \frac{60 \times 10^6 \times 10^3 \text{ m}}{3 \times 10^8 \text{ m/s}} = \frac{6 \times 10^{10}}{3 \times 10^8} = 200$ s. Therefore, correct answer is B.
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