Object a Has an Emissivity of 0

question 18

Multiple Choice

Object A has an emissivity of 0.95;and its temperature is 25 °C.At what temperature (in degrees Celsius) does object B,whose emissivity is 0.50,emit radiation at the same rate as object A if both objects have the same surface area?

• A)29 °C
• B)40 °C
• C)61 °C
• D)77 °C
• E)93 °C

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Definitions:

Softwood

Wood derived from coniferous trees, typically softer and used in various types of construction and paper products.

Cone-Bearing

Pertaining to plants that produce reproductive structures known as cones, such as pines and other conifers.

Lateral Transport

The movement of substances parallel to the surface of a cell membrane, often involved in various cellular processes.

Lenticels

Porous swellings of cork cells in the stems of woody plants; facilitate the exchange of gases.