As a Train Starts from Rest and Then Accelerates Down

question 27

Multiple Choice

As a train starts from rest and then accelerates down the track,coming toward me faster and faster,the speed of the sound waves coming toward me will be

• A)slower than the normal speed of sound in air.
• B)equal to the normal speed of sound in air.
• C)some constant speed faster than the normal speed of sound in air.
• D)faster and faster.

---

Definitions:

Equivalent Units

A concept used in process costing that converts partially completed units into a number of fully equivalent completed units.

Physical Units

A measure used in manufacturing and production to count the actual units produced, irrespective of the production stage.

Units Started

The number of units of product that have begun the production process but are not yet completed.

Units Accounted

The total count of units tracked in an inventory or production system, including those produced, sold, and currently in stock.