Two People Are Talking at a Distance of 2

question 4

Multiple Choice

Two people are talking at a distance of 2.0 m from where you are and you measure the sound intensity as 1.5 * 10^-7 W/m².Another student is 8.0 m away from the talkers.What sound intensity does the other student measure?

• A)9.4 * 10^-9 W/m²
• B)1.7 * 10^-11 W/m²
• C)4.7 * 10^-7 W/m²
• D)6.2 * 10^-8 W/m²
• E)3.5 * 10^-10 W/m²

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Definitions:

Umbilicus

also known as the navel or belly button, is the scar on the abdomen resulting from the detachment of the umbilical cord following birth.

Mesoderm

The middle layer of an embryo in early development, between the endoderm and ectoderm, which develops into muscles, bones, and circulatory systems.

Cell Differentiation

The process by which a cell changes from one cell type to another, usually from a less specialized to a more specialized form.

Fertilization

The process by which male and female reproductive cells (gametes) join to form a new cell that will develop into an embryo.