A Perfectly Black Sphere 18

question 34

Short Answer

A perfectly black sphere 18.0 cm in diameter is held at a temperature of 215°C.
(σ = 5.670 × 10^-8 W/m² • K⁴,Wien displacement law constant is 2.90 × 10^-3 m • K, ,c = 3.00 × 10⁸ m/s)
(a)Near what wavelength does this sphere radiate most strongly?
(b)If all the radiated energy were at the wavelength found in part (a),how many photons would the sphere emit each second?

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Definitions:

Papillae Projections

Small, nipple-like structures on the surface of an organ, such as the tongue, that often contain taste buds.

Taste Buds

Small sensory organs located on the tongue that allow humans to perceive different tastes.

Digestive

Pertaining to digestion.

Preicteric

Referring to the initial phase of a disease, particularly liver disease, that occurs before the onset of jaundice, where the skin turns yellow.