Units and prefixes

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The average distance between Ceres and the Sun is $AU2.8\text{ AU}$ .

$AU1\text{ AU}$ is the average distance between the Earth and the Sun.

The intensity of the Sun's radiation reaching the Earth is 1360 W/m².

$J/s1\text{ W} = 1\text{ J/s}$

The intensity of the Sun's radiation at a distance, $d$ , from the Sun is given by the equation:

\text{intensity} = \frac{K}{d^2}

where $d\,$ is measured in astronomical units ( $AU\text{AU}$ ).

State the unit of $K$ .

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Units and prefixes Questions