<span>
Elecromagnetic waves can travel through a vacuum, but a mechanical wave cannot.
Mechanical waves can only exist in a medium, such as air or water. Electromagnetic
waves behave like waves and particles, but mechanical waves only behave
like waves. </span>
As the salt solution increases its salinity, its refractive index also increases, with decreasing temperature. Through this relationship, the refractive index of salt solution at a constant temperature can be used to determine the concentration of the said solution.
A longitudinal wave is a wave in which particles of the medium move in a direction parallel to the direction that the wave moves
Answer:
5 hours
Explanation:
formula is 6 km per hour
if you have to travel 30 km, divide 30 by 6
30/6 = 5 hours
Answer: The partial pressure of
if the total pressure of the mixture is 3.9 atm is 0.975 atm
Explanation:
According to Raoult's law, the vapor pressure of a component at a given temperature is equal to the mole fraction of that component multiplied by the vapor pressure of that component in the pure state.
![p_A=x_A\times P_T](https://tex.z-dn.net/?f=p_A%3Dx_A%5Ctimes%20P_T)
where, x = mole fraction of nitrogen in solution = 0.25
= partial pressure of nitrogen = ?
= Total pressure = 3.9 atm
Putting in the values :
![p_A=0.25\times 3.9=0.975atm](https://tex.z-dn.net/?f=p_A%3D0.25%5Ctimes%203.9%3D0.975atm)
The partial pressure of
is 0.975 atm