When a Sound Wave Moves Through a Medium Such as Air,the

question 61

Multiple Choice

When a sound wave moves through a medium such as air,the motion of the molecules of the medium is in what direction (with respect to the motion of the sound wave) ?

• A)perpendicular
• B)parallel
• C)anti-parallel (in opposite direction)
• D)Both choices b and c are valid.

---

Definitions:

U.S. GAAP

United States Generally Accepted Accounting Principles, which are a set of rules and standards for financial reporting and accounting practices in the U.S.

Straight-Line Method

A method of calculating depreciation of an asset by evenly spreading the cost over its useful life.

IFRS

International Financial Reporting Standards, a set of accounting standards developed by the International Accounting Standards Board (IASB) that are globally accepted.

Depreciation Expense

The allocation of the cost of a tangible asset over its useful life, reflecting wear and tear, deterioration, or obsolescence.