B
Force=Mass times acceleration
15=3x
x=5ms^2
<span> (ρ = m / V) hope this helps...:)</span>
A: particles are more spread out in gas
Answer:
60
Explanation:
According to the given question, the computation of minimum coating thickness is shown below:-
The condition for constructive interference is
![2t_{min} = (m + \frac{1}{2} )\times \frac{\lambda}{^nmateral}](https://tex.z-dn.net/?f=2t_%7Bmin%7D%20%3D%20%28m%20%2B%20%5Cfrac%7B1%7D%7B2%7D%20%29%5Ctimes%20%5Cfrac%7B%5Clambda%7D%7B%5Enmateral%7D)
![= (0 + \frac{1}{2} )\times \frac{\lambda}{^nmateral}](https://tex.z-dn.net/?f=%3D%20%280%20%2B%20%5Cfrac%7B1%7D%7B2%7D%20%29%5Ctimes%20%5Cfrac%7B%5Clambda%7D%7B%5Enmateral%7D)
![t = \frac{\lambda}{4n}](https://tex.z-dn.net/?f=t%20%3D%20%5Cfrac%7B%5Clambda%7D%7B4n%7D)
Now we will put the values to the above formula to reach the answer
![= \frac{480nm}{4\times 2.0}](https://tex.z-dn.net/?f=%3D%20%5Cfrac%7B480nm%7D%7B4%5Ctimes%202.0%7D)
= 60
Therefore we simply applied the above formula to determine the minimum coating thickness
Because the wall reflects sound waves to your ears bouncing off of the walls, even if it's in another room.