A Stationary Railroad Whistle Is Sounded

question 39

Multiple Choice

A stationary railroad whistle is sounded. An echo is heard 5.0 seconds later by the train's engineer. If the speed of sound is 343 m/s, how far away is the reflecting surface?

• A)68 m
• B)140 m
• C)860 m
• D)1700 m
• E)2000 m

---

Definitions:

Executive Summary

A concise document or section of a document that summarizes the main points of a larger report or proposal.

Timeline

A chronological representation of events, tasks, or milestones, often used in planning and project management to visualize sequences and duration.

Marketing Research

The process of gathering, analyzing, and interpreting information about a market, including about potential and existing customers.

Sales Forecasts

Predictions about the future sales performance of a product or service, based on historical data, market trends, and other factors.