8.1) Here, Pressure increases with depth in the ocean at higher rate then that of increase in altitude in atmosphere. So, the rate of change of pressure is different in these journeys.So, your most correct answer would be option D.
8.2) Difference in the shape of lines is due to different density of air & water. So, that physical property and your answer would be option A
So, in Short Answers of your questions are:
8.1) - Option D
8.2) - Option A
Hope this helps!
Answer:
carbon is that component :)
Based on the velocity of sound in water, the depth of the water is 5550 m.
<h3>What is the depth of the water if a transmitted sound pulse returns an echo 7.4 seconds later?</h3>
The velocity of sound in water = 1500 m/s
Time taken to receive the echo = 7.4 seconds
- Distance travelled by sound = speed * time
Distance = 1500 * 7.4
Distance = 11100 m
Since this is a to and fro distance covered
- Depth of the water = distance travelled/ 2
Depth of water = 11100/2
Depth of water = 5550 m
Therefore, the depth of the water is 5550 m.
Learn more about echo and sound at: brainly.com/question/14090821
Iron oxides are chemical compounds, so A) compound :)