Everything with a temperature above absolute zero glows with some kind of

light. Give the peak wavelengths, $\backslash$lambda peak $($referred to in your textbook as $\backslash$lambda max$),$ for that

light emitted by each of the following cases. Give your answers in the units requested,

to two significant figures.

$($a$)$ The Earth, with an average temperature of roughly $300$ K$.($In $$m$.)$

$($b$)$ The red giant star Betelgeuse, with T $=3600$ K$.($In nm$.)$

$($c$)$ A quasar, with T $=1\mathrm{.}0\backslash$times $105$ K$.($In nm$.)$