A Piano Tuner Knows That a Key on the Piano

question 16

Multiple Choice

A piano tuner knows that a key on the piano is tuned to the frequency of a test tuning fork when the fork and key struck at same time produce beats of

• A)0 Hz.
• B)1 Hz.
• C)2 Hz.
• D)3 Hz.
• E)4 Hz.

---

Definitions:

African-American Families

Families of African descent living in the United States, with histories and cultures that have significantly shaped American society.

White Families

Refers to households or family units identified as white based on racial or ethnic classification, often used in demographic and socio-economic analyses.

Population in Poverty

The portion of the community that lives below the poverty line, unable to afford basic human needs like clean water, nutrition, health care, education, clothing, and shelter.

Poverty Rates

The percentage of the population that lives below the poverty line, which is often defined as the income level at which a person cannot afford the minimum necessities for life.