Which One of the Following Objects,all Initially at the Same

question 7

Multiple Choice

Which one of the following objects,all initially at the same temperature,will be most efficient in losing heat?

• A)a dull black box in vacuum
• B)a dull black box in air
• C)a box with an emissivity of 0.1
• D)a polished silver box in air
• E)a polished silver box in vacuum

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Definitions:

Germinal

Relating to the earliest phase of embryonic development, in the first two weeks post-conception when the zygote begins to divide and grow.

Zygote

A fertilized egg cell that results from the union of a female gamete (egg, or ovum) with a male gamete (sperm).

Embryo

The early developmental stage of an organism, following fertilization and preceding fetal development.

Amnion

A thin, protective membrane that forms a sac around the embryo or fetus during pregnancy, containing the amniotic fluid.