Answer: A. by analyzing and making inferences about them
Explanation:
Answer:
Minimum thickness will be 100 nm
Explanation:
We have given refractive index is n = 1.5
Wavelength of the light incidence
= 600 nm
We have to find the smallest thickness of the film so that there will be minimum light reflect
For minimum thickness of non reflecting film
, here t is thickness,
is wavelength and n is refractive index
Putting all values ![t=\frac{600}{4\times 1.5}=100nm](https://tex.z-dn.net/?f=t%3D%5Cfrac%7B600%7D%7B4%5Ctimes%201.5%7D%3D100nm)
So minimum thickness will be 100 nm
Answer:
d = 3.5*10^4 m
Explanation:
In order to calculate the displacement of the airplane you need only the information about the initial position and final position of the airplane. THe initial position is at the origin (0,0,0) and the final position is given by the following vector:
![\vec{r}=(1.21*10^3\hat{i}+3.45*10^4\hat{j})m](https://tex.z-dn.net/?f=%5Cvec%7Br%7D%3D%281.21%2A10%5E3%5Chat%7Bi%7D%2B3.45%2A10%5E4%5Chat%7Bj%7D%29m)
The displacement of the airplane is obtained by using the general form of the Pythagoras theorem:
(1)
where x any are the coordinates of the final position of the airplane and xo and yo the coordinates of the initial position. You replace the values of all variables in the equation (1):
![d=\sqrt{(1.12*10^3-0)^2+(3.45*10^4-0)^2}=3.45*10^4m](https://tex.z-dn.net/?f=d%3D%5Csqrt%7B%281.12%2A10%5E3-0%29%5E2%2B%283.45%2A10%5E4-0%29%5E2%7D%3D3.45%2A10%5E4m)
hence, the displacement of the airplane is 3.45*10^4 m
The advantage is that we do not run out of resources and a disadvantage is that is dangerous when a “human” gets too close and gets sick by the radiation.
If my math is right its A) 7
because 189 divided by 27 is 7