Question
$\bullet$ What is the ratio of the sunlight intensity reaching Mercurycompared with the sunlight intensity reaching Earth? (On average, Mercury's distance from the Sun is 0.39 that of Earth's.)
Step 1
This can be written as: \[ I = \frac{P}{4\pi r^2} \] where \(I\) is the intensity, \(P\) is the power of the sun, \(r\) is the distance of the planet from the sun, and \(\pi\) is a mathematical constant. Show more…
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What is the ratio of the sunlight intensity reaching Mercury compared with the sunlight intensity reaching Earth? (On average, Mercury's distance from the Sun is 0.39 that of Earth's.)
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