A Solid Concrete Wall Has Dimensions 4

question 69

Multiple Choice

A solid concrete wall has dimensions 4.0 m × 2.4 m and is 30 cm thick.The thermal conductivity of the concrete is 1.3 W/m ∙ K,and it separates a basement from the ground outside.The inner surface of the wall is at 18°C,and the outside surface is at 6°C.How much heat flows through the wall every hour?

• A)1.8 MJ
• B)1.8 kJ
• C)500 J
• D)5.0 MJ
• E)5.0 kJ

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Definitions:

Monogamy

A mating system in which an individual has only one mate during a breeding season or for their entire life.

Reproductive Span

The period in an organism's lifespan during which it is capable of reproducing.

Postreproductive Survival

The period of an organism's life after it has completed its reproductive phase, which can have significant evolutionary implications, particularly in social species.

Primates

An order of mammals characterized by large brains, forward-facing eyes, and complex social structures, including humans, monkeys, and apes.