Physics

Problem

A small, perfectly black spherical satellite of radius

0.50\,\text{m}

drifts in deep space, far from any external radiation. The electronics inside dissipate

200\,\text{W}

as heat. If the satellite is in steady thermal equilibrium, what is its surface temperature? (Stefan–Boltzmann constant

\sigma = 5.67\times10^{-8}\,\text{W}\,\text{m}^{-2}\,\text{K}^{-4}

) a)

260\,\text{K}

150\,\text{K}

180\,\text{K}

220\,\text{K}