A Tuning Fork Has a Frequency of 400 Hz and Hence

question 1

Multiple Choice

A tuning fork has a frequency of 400 Hz and hence a period of 2.50 × 10−³ s.If the tuning fork is in an inertial frame of reference moving by the observer at speed of 0.680c,what is the frequency of the fork as measured by the observer? (Assume that measurements are strictly by optical means and that the speed of sound waves in air is not pertinent here. )

• A) 454 Hz
• B) 293 Hz
• C) 605 Hz
• D) 265 Hz

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Definitions:

Machine-hours

A measure of the total run time of machines in the manufacturing process, often used for costing purposes.

Overapplied Overhead

Overapplied overhead occurs when the allocated manufacturing overhead costs in an accounting period are less than the actual overhead costs incurred.

Job-order Costing

A cost accounting system that assigns costs to specific production batches or jobs.

Manufacturing Overhead

All manufacturing costs that are not directly associated with the production of goods, including costs related to indirect materials, indirect labor, and other indirect expenses.