A Rectangular Tank Has Width $3 \mathrm { ft }$ , Height

question 39

Multiple Choice

A rectangular tank has width $3 \mathrm { ft }$ , height $2 \mathrm { ft }$ , and length $7 \mathrm { ft }$ . It is filled with equal volumes of water and oil. The oil has a weight density of $50 \mathrm { lb } / \mathrm { ft } ^ { 3 }$ and floats on the water. Find the force exerted by the mixture on one end of the tank. (The weight density of water is $62.4 \mathrm { lb } / \mathrm { ft } ^ { 3 }$ .)

• A) \(319 \mathrm { lb }\)
• B) \(356 \mathrm { lb }\)
• C) \(337 \mathrm { lb }\)
• D) \(169 \mathrm { lb }\)

---

Definitions:

Adenine

A purine nucleobase vital for the structure of DNA and RNA, where it pairs with thymine in DNA and uracil in RNA.

Guanine

One of the four main nucleobases found in the nucleic acids DNA and RNA, characterized by a double-ring structure that pairs with cytosine.

Messenger RNA

A type of RNA that carries genetic information from DNA to the ribosome, where it specifies the amino acid sequence of the protein products of gene expression.

Ribosomal RNA

A molecular component of ribosomes, essential for protein synthesis in all living organisms, constituting the enzymatic and structural platform for the translation of mRNA into proteins.