Answer:
the amount of each charge and the distance between them. ... Coulomb's law states the the electric force between two charges is proportional to the product of the two charges and inversally proportional to the square distance that separates their centers.
Answer:
a)
s
b) 3.41 mm
Explanation:
a)
We take the speed of light, c =
m/s and the refractive index of glass as 1.517.
Speed = distance/time
Time = distance/speed
Refractive index, n = speed of light in vacuum / speed of light in medium
![n=\dfrac{c}{s}](https://tex.z-dn.net/?f=n%3D%5Cdfrac%7Bc%7D%7Bs%7D)
![s=\dfrac{c}{n}](https://tex.z-dn.net/?f=s%3D%5Cdfrac%7Bc%7D%7Bn%7D)
![t=\dfrac{d}{c/n}](https://tex.z-dn.net/?f=t%3D%5Cdfrac%7Bd%7D%7Bc%2Fn%7D)
![t=\dfrac{dn}{c}](https://tex.z-dn.net/?f=t%3D%5Cdfrac%7Bdn%7D%7Bc%7D)
![t=\dfrac{3\times10^{-3}\times1.517}{3.0\times10^8}](https://tex.z-dn.net/?f=t%3D%5Cdfrac%7B3%5Ctimes10%5E%7B-3%7D%5Ctimes1.517%7D%7B3.0%5Ctimes10%5E8%7D)
![t=1.517\times10^{-11}](https://tex.z-dn.net/?f=t%3D1.517%5Ctimes10%5E%7B-11%7D)
b)
We take the refractive index of water as 1.333.
Speed in water = speed in vacuum / refractive index of water
Distance = speed * time
![d=s\times t](https://tex.z-dn.net/?f=d%3Ds%5Ctimes%20t)
![d=\dfrac{c}{n_w}\times \dfrac{3\times10^{-3}\times1.517}{c}](https://tex.z-dn.net/?f=d%3D%5Cdfrac%7Bc%7D%7Bn_w%7D%5Ctimes%20%5Cdfrac%7B3%5Ctimes10%5E%7B-3%7D%5Ctimes1.517%7D%7Bc%7D)
![d=\dfrac{3\times10^{-3}\times 1.517}{1.333}](https://tex.z-dn.net/?f=d%3D%5Cdfrac%7B3%5Ctimes10%5E%7B-3%7D%5Ctimes%201.517%7D%7B1.333%7D)
d = 3.41 mm
We must rewrite the Newton's <span>Second</span> Law:
Applying in the question:
Answer:
180 degrees
Explanation:
if the waves are in phase this means that their frequency is doubled or amplitude is doubled