Answer:
Decreases by
times
Explanation:
The intensity of a sound is defined as the energy of the sound that is flowing in an unit time through the unit area which is in the direction that is perpendicular to the direction of the sound waves movement.
The intensity of energy is described by the inverse square law. It states that the intensity varies inversely with the distance square of the distance.
In other words, the sound intensity decreases as inversely proportional to the squared of the distance. i.e. ![$\frac{1}{r^2}$](https://tex.z-dn.net/?f=%24%5Cfrac%7B1%7D%7Br%5E2%7D%24)
In the context when the distance was 3 m, the intensity of the sound was = ![$\frac{1}{9}$](https://tex.z-dn.net/?f=%24%5Cfrac%7B1%7D%7B9%7D%24)
But when the distance became 6 cm or 0.06 m, the sound intensity decreases by = ![$\frac{1}{0.06^2}$](https://tex.z-dn.net/?f=%24%5Cfrac%7B1%7D%7B0.06%5E2%7D%24)
=
times
Answer:
Also, as stream depth increases, the hydraulic radius increases thereby making the stream more free flowing. Both of these factors lead to an increase in stream velocity. The increased velocity and the increased cross-sectional area mean that discharge increases.
When adding a solute to the solvent, the solution will then boil at a point much higher than the solvent itself. Therefore, it would take much longer for the solution to boil. Among the choices, the correct answer would be B. The water will boil at a higher temperature.
The french revolution led to many deaths and impacted history because of the amount of life lost
It means that you consider the elements as a list organized by atomic number, the property is seen to repeat over and over as you move through that list.