Situation 15.1 A Train Is Approaching a Signal Tower at a Speed

question 39

Multiple Choice

Situation 15.1
A train is approaching a signal tower at a speed of 40 m/s.The train engineer sounds the 1000 Hz whistle and a switchman in the tower responds by sounding the 1200 Hz siren.The air is still and the speed of sound is 340 m/s.
-In Situation 15.1,the frequency of the tower siren tone,heard by the engineer,in SI units,is closest to:

• A)1200
• B)300/340 × 1200
• C)340/300 × 1200
• D)340/380 × 1200
• E)380/340 × 1200

Explain the influences of positivity effects and race crossover in aging perspectives.

Understand the concept of naturally occurring retirement communities and their significance.

Identify workforce participation trends among older adults and exceptions based on occupation.

Comprehend the role of self-efficacy in aging and its impact on older adults’ attitudes and behaviors.

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Definitions:

Clay Sculpture

Art forms created by shaping and molding clay into three-dimensional figures or objects, a technique used since ancient times.

Ceramics

The art or process of making objects from clay and other raw materials by the process of firing at high temperatures, resulting in a hardened, durable form.

Shona-Speaking People

An ethnic group from Southern Africa, primarily found in Zimbabwe, known for their sculptures and their rich traditions in music, art, and dance.

Regional Ancestors

Cultural or historical figures venerated within a specific geographical area for their contributions to the region's identity or heritage.