A Boy on a Bicycle Approaches a Brick Wall as He

question 23

Multiple Choice

A boy on a bicycle approaches a brick wall as he sounds his horn at a frequency 400 Hz. The sound he hears reflected back from the wall is at a frequency 408 Hz. At what is the speed is the boy riding his bicycle toward the wall? Assume the speed of sound in air is 340 m/s.

• A)3.68 m/s
• B)333 m/s
• C)6.67 m/s
• D)6.80 m/s
• E)3.37 m/s

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Definitions:

Work In Process Inventory

The inventory that includes items currently being manufactured but not yet completed or ready for sale.

Weighted-Average Method

An inventory cost calculation method that averages the cost of all similar items available, regardless of purchase date.

Equivalent Unit

A concept in cost accounting used to compute the cost of partially completed goods, translating them into a number of fully completed units.

Assembly Department

A section of a manufacturing company where components are assembled into final products.