of elements in the same group, those at the bottom of the periodic table have low ionization energies because C. their atomic radius is large
Answer:
Explanation:
The question in english is:
A ray of light falls under an angle of incidence of 30 degrees on a flat surface that separates two transparent materials with indexes of refractions 1.60 and 1.40, respectively.
Calculate the angle of refraction (from the environment with the lower index of refraction)
<u>Solution</u>
According to Snell's Law :
![n_{1}sin(\theta_{1})=n_{2}sin(\theta_{2})](https://tex.z-dn.net/?f=n_%7B1%7Dsin%28%5Ctheta_%7B1%7D%29%3Dn_%7B2%7Dsin%28%5Ctheta_%7B2%7D%29)
Where:
is the first medium index of refraction
is the second medium index of refraction
is the angle of the incident ray
is the angle of the refracted ray
We need to find
from the equation above,
![\theta_{2}=sin^{-1}(\frac{n_{1}}{n_{2}}sin\theta_{1} )](https://tex.z-dn.net/?f=%5Ctheta_%7B2%7D%3Dsin%5E%7B-1%7D%28%5Cfrac%7Bn_%7B1%7D%7D%7Bn_%7B2%7D%7Dsin%5Ctheta_%7B1%7D%20%29)
![\theta_{2}=34.84\°](https://tex.z-dn.net/?f=%5Ctheta_%7B2%7D%3D34.84%5C%C2%B0)
<h2>Therefore, the angle of refraction is 34.84°</h2>
This statement is false. There is actually five types of plains. The five types of plains are coastal plain, alluvial plain, glacial plain, terrestrial plain and flood plain. Plains are flat areas that are usually located in lowlands and at the bottom of the valleys.
Samantha wants to find the perimeter of a square to be able to build a frame for her new photos she took. Altogether, the sides should equal 14 inches. Sides A, B, and C equal 4, 4, and 6 inches. What is side D?