Two Sinusoidal Waves Travel Along the Same String

question 49

Multiple Choice

Two sinusoidal waves travel along the same string.They have the same wavelength and frequency.Their amplitudes are y_m1 = 2.5 mm and y_m2 = 4.5 mm, and their phases are π/4 rad and π/2 rad, respectively.What are the amplitude and phase of the resultant wave?

• A)cannot solve without knowing the wavelength
• B)5.1 mm, 0.51 rad
• C)5.1 mm, 0.79 rad
• D)6.5 mm, 1.3 rad
• E)7.0 mm, 1.3 rad

---

Definitions:

Comparative Advantage

The ability of an individual, company, or country to produce a particular good or service at a lower opportunity cost than its competitors.

Import

The act of bringing goods or services into a country from abroad for the purpose of trade.

Export

The sale of goods or services from one country to another.

Trucks

Large heavy-duty vehicles designed for transporting goods and materials over long distances.