An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?
Answer (1)
Sound travels at different speeds depending on the medium: fastest in solids, slower in liquids, and slowest in gases.
Wave 1 (liquid) will move the fastest - Incorrect.
Wave 2 (solid) will move the slowest - Incorrect.
Wave 3 (gas) will move the slowest - Correct.
Wave 4 (liquid) will move the fastest - Incorrect.
The correct statement is: Wave 3 will move the slowest.
Explanation
Analyze the problem Let's analyze the problem. We are given a table that shows the medium through which four different sound waves travel. The mediums are liquid, solid, and gas. We need to determine which statement about the speed of sound waves in different mediums is correct.
Recall the properties of sound Recall that sound travels fastest in solids, slower in liquids, and slowest in gases.
Evaluate each statement Now, let's evaluate each statement:
Wave 1 (liquid) will move the fastest. This is incorrect because solids are faster than liquids.
Wave 2 (solid) will move the slowest. This is incorrect because solids are the fastest.
Wave 3 (gas) will move the slowest. This is correct because gases are the slowest.
Wave 4 (liquid) will move the fastest. This is incorrect because solids are faster than liquids.
Determine the correct statement Therefore, the correct statement is that Wave 3 will move the slowest.
Examples
Understanding how sound travels through different mediums is crucial in various fields. For instance, in seismology, scientists analyze the speed of seismic waves (sound waves) through the Earth's layers (solid, liquid, and gas) to understand the Earth's structure and detect earthquakes. The speed of sound in different materials also affects the design of acoustic devices and musical instruments. For example, the speed of sound in the air inside an organ pipe determines its pitch.
