Car 1 Moves Toward Car 2 with Speed V

question 50

Multiple Choice

Car 1 moves toward car 2 with speed v. An observer in car 2 measures the frequency of the sound emitted by car 1's horn to be f. Now, car 1 remains stationary while car 2 moves toward car 1 with speed v. The observer in car 2 now measures the frequency of car 1's horn to be f'. The relationship between the observed frequencies is

• A) f < f'.
• B) f = f'.
• C) f = 2 f'.
• D) f = 1/2 f'.
• E) f > f'.

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Definitions:

Contribution Margin

The amount remaining from sales revenue after variable costs have been deducted, indicating how much contributes to covering fixed costs.

Total Gross Margin

This is the difference between sales revenue and the cost of goods sold, before deducting administrative and selling expenses.

Absorption Costing

An accounting method that includes both variable and fixed production costs in the cost of goods sold.

Total Gross Margin

A financial metric that measures the difference between revenue and the cost of goods sold, indicating the profitability of sales before deducting operating expenses.