How Large a Force Is Necessary to Stretch a 2

question 51

Multiple Choice

How large a force is necessary to stretch a 2.0-mm-diameter steel wire (Y = 2.0 ´ 10¹¹ N/m²) by 1.0%?

• A)3.1 ´ 10³ N
• B)6.3 ´ 10³ N
• C)9.4 ´ 10³ N
• D)1.3 ´ 10⁴ N

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Definitions:

Portuguese Man-of-War

A marine cnidarian known for its venomous tentacles, which it uses to capture prey.

Cubozoan

A class of box jellyfish known for their cube-shaped medusae and highly venomous stings.

Colony of Polyps

A group of many individual polyps (small, sessile organisms) that are genetically identical and physically connected, often found in corals.

Cnidaria

A phylum of aquatic invertebrate animals that includes jellyfish, corals, and sea anemones, characterized by a simple body plan with radial symmetry.