Find Parametric Equations for the Cylinder $y ^ { 2 } + z ^ { 2 } = 49$

question 8

Multiple Choice

Find parametric equations for the cylinder $y ^ { 2 } + z ^ { 2 } = 49$

• A) \(\vec { r } ( s , \theta ) = 7 \cos \overrightarrow { \theta i } + 7 \sin \theta \vec { j }\)
• B) \(\vec { r } ( s , \theta ) = 7 \cos \theta \vec { i } + 7 \sin \theta \vec { j } + s \vec { k }\)
• C) \(\vec { r } ( s , \theta ) = s \vec { i } + 49 \cos \theta \vec { j } + 49 \sin \theta \vec { k }\)
• D) \(\vec { r } ( s , \theta ) = \operatorname { si } + 7 \cos \theta \vec { j } + 7 \sin \theta \vec { k }\)
• E) \(\vec { r } ( s , \theta ) = \operatorname { si } + 7 \cos \theta \vec { j } + 7 \cos \theta \vec { k }\)

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Definitions:

UV Light

Ultraviolet light, a type of electromagnetic radiation with a wavelength shorter than visible light but longer than X-rays.

Reaction Rates

A measure of how quickly the concentration of reactants decreases or the concentration of products increases over time in a chemical reaction.

Free Radical

An atom, molecule, or ion that has an unpaired valence electron, making it highly reactive and prone to participating in chemical reactions.

Chlorination

The process of adding chlorine to water or organic molecules, either for disinfection purposes or to introduce chlorine atoms into molecules for chemical synthesis.