Answer:
Gay-Lussac’s law, because as the pressure increases, the temperature increases
Explanation:
First of all, we can notice that the volume of the tank is fixed: this means that the volume of the air inside is also fixed.
This means that in this situation we can apply Gay-Lussac's law, which states that:
"for a gas kept at constant volume, the pressure of the gas is proportional to the absolute temperature of the gas".
Mathematically:
![p\propto T](https://tex.z-dn.net/?f=p%5Cpropto%20T)
where p is the pressure in Pascal and T is the temperature in Kelvin.
In this case, the tank is filled with air: this means that the pressure of the gas inside the tank increases. And therefore, according to Gay-Lussac's law, the temperature will increase proportionally, and this explains why the tank gets hot.
Answer:
Explanation:
Given
Power ![P=1.9\ J/s](https://tex.z-dn.net/?f=P%3D1.9%5C%20J%2Fs)
Also Power is given by
![P=\frac{\rho \times A\times V^3}{2}----1](https://tex.z-dn.net/?f=P%3D%5Cfrac%7B%5Crho%20%5Ctimes%20A%5Ctimes%20V%5E3%7D%7B2%7D----1)
Where P=Power delivered
=density of air
A=Area
V=Velocity of air
If we increase velocity by a factor of 2 Power changes to P'
![P'=\frac{\rho \times A\times (2V)^3}{2}----2](https://tex.z-dn.net/?f=P%27%3D%5Cfrac%7B%5Crho%20%5Ctimes%20A%5Ctimes%20%282V%29%5E3%7D%7B2%7D----2)
Divide 1 and 2
![\frac{P}{P'}=\frac{V^3}{(2V)^3}](https://tex.z-dn.net/?f=%5Cfrac%7BP%7D%7BP%27%7D%3D%5Cfrac%7BV%5E3%7D%7B%282V%29%5E3%7D)
![P'=8 P](https://tex.z-dn.net/?f=P%27%3D8%20P)
![P'=8\times 1.9=15.2\ J](https://tex.z-dn.net/?f=P%27%3D8%5Ctimes%201.9%3D15.2%5C%20J)
Answer:
1.5454 meters
Explanation:
Hz = ![\frac{cycles}{seconds}](https://tex.z-dn.net/?f=%5Cfrac%7Bcycles%7D%7Bseconds%7D)
wavelength is measured as ![\frac{meters}{cycle}](https://tex.z-dn.net/?f=%5Cfrac%7Bmeters%7D%7Bcycle%7D)
or sometimes just meters with the understanding that it means meters per cycle
340![\frac{meters}{second}](https://tex.z-dn.net/?f=%5Cfrac%7Bmeters%7D%7Bsecond%7D)
220![\frac{cycles}{second}](https://tex.z-dn.net/?f=%5Cfrac%7Bcycles%7D%7Bsecond%7D)
= ![\frac{340}{220}](https://tex.z-dn.net/?f=%5Cfrac%7B340%7D%7B220%7D)
![\frac{meters}{cycle}](https://tex.z-dn.net/?f=%5Cfrac%7Bmeters%7D%7Bcycle%7D)
= 1.5454 ![\frac{meters}{cycle}](https://tex.z-dn.net/?f=%5Cfrac%7Bmeters%7D%7Bcycle%7D)