Two Harmonic Sound Waves Reach an Observer Simultaneously

question 36

Multiple Choice

Two harmonic sound waves reach an observer simultaneously.The observer hears the sound intensity rise and fall with a time of 0.200 s between the maximum intensity and the succeeding minimum intensity.What is the difference in frequency of the two sound waves?

• A) 10.0 Hz
• B) 0.200 Hz
• C) 5.00 Hz
• D) 2.50 Hz
• E) 1.25 Hz

---

Definitions:

Power Costs

The expenses associated with the consumption of electricity or other forms of energy used in the production process.

Spending Variance

The difference between the actual amount spent and the budgeted amount for a period, which can be either favorable or unfavorable.

Budgeting

The process of creating a plan to spend your money, outlining how much money will be earned and how it will be spent.

Static Planning Budget

A budget based on a fixed level of activity, not adjusted for actual activity levels.