You Shout at a Cliff,and Hear Your Echo in 2

question 25

Multiple Choice

You shout at a cliff,and hear your echo in 2 seconds.If the speed of sound in the air is 340 m/s,the distance of the cliff from you is

• A)85 m.
• B)170 m.
• C)340 m.
• D)680 m.
• E)none of the above.

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Definitions:

Various Shapes

Refers to the diversity of forms or outlines that objects, substances, or structures can possess.

Modern Scientist

A modern scientist engages in systematic study and builds knowledge through research, experimentation, observation, and methodological analysis in fields such as biology, chemistry, physics, and beyond.

Conservation of Mass

A fundamental principle of classical physics that states mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations.