You Are Doing a Hydrographic Survey by the Sand Heads

question 38

Multiple Choice

You are doing a hydrographic survey by the Sand Heads Light, off the mouth of the Fraser River in very silty green water. You lower a bar to check its reflection and calibrate your sounder. You find that the fresh river water has dropped the speed of sound to 1483 m/sec. If the bottom registers at 15 milliseconds (0.015 sec) , how deep is the top of the Fraser delta? Use the equation: depth (m) =

• A) 2250 m
• B) 11.12 m
• C) 22.25 m
• D) 11.25 m

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Definitions:

Reuses

In computing, the act or practice of using existing software components, code, or systems in new or additional applications to reduce duplication and save development time.

Discards

Refers to the action of rejecting or getting rid of something that is not needed or wanted, often seen in data processing and file management.

Prompts

Prompts are messages or symbols on a computer or device that request input or action from the user.

Table Datasheet

A view in databases that displays data in rows and columns, similar to a spreadsheet.