In 1 Second, Light Can Travel 2

question 23

Multiple Choice

In 1 second, light can travel 2.998 10⁸ m. How many inches does light travel in 1 femtosecond? (1 fs 10^-15 s, 1 inch 2.54 cm exactly)

• A)1180 in
• B)11.80 in
• C)1.180 in
• D)1.180 10^-5 in
• E)1.180 10^-7 in

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Definitions:

Neural Crest Cells

A group of embryonic cells found only in vertebrates; develop along the neural tube and migrate to various parts of the embryo where they give rise to (or influence the development of) nerves, head muscles, cranium, jaws, and other structures.

Embryonic Cells

Cells that originate from the embryo and have the potential to develop into any type of body cell, possessing high degrees of plasticity and the ability to proliferate.

Dipnoi

A group of fish also known as lungfish, characterized by their ability to breathe air using lungs in addition to gills.

Actinistia

A subclass of mostly extinct fish, with the modern coelacanths being the only living representatives, characterized by lobed fins.