How long, in seconds, does it take a radar signal to make a round-trip between Earth and Mars when the two planets are 1.2 AU apart? You can use the speed of light as 3x10^5 km/s, and 1 AU is 1.5x10^8 km.
Added by John G.
Step 1
2 AU apart. 1 AU = 1.5x10^8 km Distance = 1.2 AU * 1.5x10^8 km/AU Distance = 1.8x10^8 km Show more…
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