Answer:
d=0.02m
Explanation:
The key of the exercise is to be able to graph the problem to be able to develop it. After that you simply proceed through a triangular relationship.
Then I leave the graph of the problem and give the solution.
So things, under the given relationship, we have,
<em>
*The value of 0.04 is taken because the triangle given in the graph must be divided in half, to obtain rectangular triangles.</em>
Answer:
The air-water interface is an example of<em> </em>boundary. The <u><em>transmitted</em></u><em> </em> portion of the initial wave energy is way smaller than the <u><em>reflected</em></u><em> </em> portion. This makes the <u><em>boundary</em></u> wave hard to hear.
When both the source of the sound and your ears are located underwater, the sound is louder because the sound waves can <u><em>travel directly to your ear</em></u>.
Explanation:
The air-to-water sound wave transmission is inhibited because more of reflection than transmission of the wave occurs at the boundary. In the end, only about 30% of the sound wave eventually reaches underwater. For sound generated underwater, all the wave energy is transmitted directly to the observer. Sound wave travel faster in water than in air because, the molecules of water are more densely packed together, and hence can easily transmit their vibration to their neighboring molecules, when compared to air.
Answer:
Atelectasis
Explanation:
Atelectasis is defined as the partial or completely collapsion of lungs, it is caused because of the collapse of tiny sacs of lungs or with the possibility, that these space is filled by the alveolar fluid.
Atelectasis is the condition in which the surface area of the alveolar is collapse, this can be caused due to the absence of surfactants. This condition will result in decrease or reduction of gas exchange.
Answer:
Final speed of the rocket,
Explanation:
It is given that,
Impulse delivered by an engine, J = 3.5 kg-m/s
Mass of the rocket, m = 120 g = 0.12 kg
To find,
The final speed of the rocket
Solution,
We know that the impulse is equal to the product of mass and velocity o it is equivalent to the change in momentum of an object.
So, the final speed of the rocket once the engine has fired is 29.16 m/s.
Answer:
100 years
Explanation:
10,000 divided by 100 equals 100