Answer
$9.35\times10^{-6}m$
Work Step by Step
Use Wien’s law, equation 27–2. Body temperature is (273 + 37)K = 310K.
$$\lambda_p =\frac{2.90\times10^{-3}m \cdot K}{T}$$
$$\lambda_p =\frac{2.90\times10^{-3}m \cdot K}{310K}=9.35\times10^{-6}m$$
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