As Shown in the Figure, a Man Is Traveling on a Bicycle

question 34

Short Answer

As shown in the figure, a man is traveling on a bicycle along a straight road that runs parallel to and right next to some railroad tracks. While moving at 10 m/s, he hears the whistle of a train that is behind him, as shown in the figure. The frequency emitted by the train's whistle is 820 ${~Hz} \text {, }$ but the frequency the man hears is 774 ${~Hz}$ The speed of sound is 340 m/s.
(a) What frequency is heard by a stationary observer located between the train and the bicycle?
(b) What is the speed of the train, and is the train traveling away from or toward the bicycle?

Recognize the stages and characteristics of brain development across different age groups.

Identify and describe various sleep states and their significance.

Explain the significance of physical and brain growth patterns and measurements.

Understand the processes and importance of neural connectivity and pruning in development.

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Definitions:

Disaffirm

To express denial or contradiction of a previous statement, belief, or agreement.

Minor Contracts

Agreements entered into by individuals under the age of legal majority, which are often voidable at the discretion of the minor.

Pre-Injury Waiver

A pre-injury waiver is a legal agreement where a participant in an activity agrees to waive their right to sue the provider for any injuries that might occur, effectively absolving the provider of liability.

Summary Judgment

A legal determination made by a court without a full trial, granted when one party's evidence clearly shows there is no factual dispute, thereby avoiding the need for a trial.