Assuming That the Wave Speed Varies Little When Sound Waves

question 11

Multiple Choice

Assuming that the wave speed varies little when sound waves are traveling though a material that suddenly changes density by 10%,what percentage of the incident wave intensity is reflected?

• A)< 1%
• B)5%
• C)10%
• D)20%

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Definitions:

Indentured Servants

Individuals who agreed to work for a set period of time, without pay, in exchange for transportation to a new country, lodging, and food.

Puritans

A collective of English Protestants during the 16th and 17th centuries aiming to cleanse the Church of England from Roman Catholic rituals.

English Civil War

A series of armed conflicts and political machinations between Parliamentarians ("Roundheads") and Royalists ("Cavaliers") occurring from 1642 to 1651, fundamentally concerning the manner of England's governance and issues of religious freedoms.