Imagine That You Are Working at an Outback Mine

question 17

Multiple Choice

Imagine that you are working at an outback mine. In part of the on-sight mineral separation plant, a slurry consisting of a mixture of mineral dust and water flows from one part of the plant to another down a pipe of diameter 10 cm. The flow needs to remain turbulent, as otherwise the mineral dust will settle to the bottom of the pipe and block it. If the density of the flurry is 2000 km m-3 and its viscosity is 0.001 Pa s, what is the minimum velocity the slurry must flow at to ensure it remains turbulent?

• A) 2.0 cm s-1.
• B) 4.0 cm s-1.
• C) 6.0 cm s-1.
• D) 12.0 cm s-1.
• E) 24.0 cm s-1.ANS

Explore and apply the use of concept-mapping programs for organizing ideas and drafting projects.

Recognize and implement the use of collaborative writing tools to enhance productivity in team projects.

Comprehend the use of RSS feeds and concept-mapping programs for information gathering and project planning.

Understand the application and benefits of grammar, style, and spelling checkers in improving document quality.

---

Definitions:

Opportunity Cost

The loss of potential gain from other alternatives when one alternative is chosen.

Leisure Time

Time available for ease and relaxation, where no work-related duties are expected, allowing for personal preferences in activities.

Marginal Productivity

The additional output resulting from the use of one more unit of a factor of production, holding other factors constant.

Labor-saving

Technologies or methods that decrease the amount of work required to produce goods or services, often leading to increased efficiency.