Answer:
therefore critical angle c= 69.79°
Explanation:
Canola oil is less dense than water, so it floats over water.
Given ![n_{canola}= 1.47](https://tex.z-dn.net/?f=n_%7Bcanola%7D%3D%201.47)
which is higher than that of water
refractive index of water ![n_{water}=1.33](https://tex.z-dn.net/?f=n_%7Bwater%7D%3D1.33)
to calculate critical angle of light going from the oil into water
we know that
![sinc= \frac{n_{water}}{n_{canola}}](https://tex.z-dn.net/?f=sinc%3D%20%5Cfrac%7Bn_%7Bwater%7D%7D%7Bn_%7Bcanola%7D%7D)
now putting values we get
![sinc= \frac{1.33}{1.47}](https://tex.z-dn.net/?f=sinc%3D%20%5Cfrac%7B1.33%7D%7B1.47%7D)
c= ![sin^{-1}(\frac{1.33}{1.47} )](https://tex.z-dn.net/?f=sin%5E%7B-1%7D%28%5Cfrac%7B1.33%7D%7B1.47%7D%20%29)
c=69.79°
therefore critical angle c= 69.79°
Answer:
Work done, W = 2675.4 J
Given:
mass, m = 70.0 kg
height, H = 3.90 m
Solution:
According to the question, as the person jumps the stairs up, there is an increase in the potential energy of the person which is provided by the work done in climbing the stairs and is given by:
Work done, W = mgH
where
g = acceleration due to gravity = ![9.8 m/s^{2}[tex][tex]W = 70.0\times 9.8\times 3.90 = 2675.4 J](https://tex.z-dn.net/?f=9.8%20m%2Fs%5E%7B2%7D%5Btex%5D%3C%2Fp%3E%3Cp%3E%5Btex%5DW%20%3D%2070.0%5Ctimes%209.8%5Ctimes%203.90%20%3D%202675.4%20J)
The Greek philosopher Aristotle and the Roman Catholic Church also believed the sun revolved around the earth. In 1543, Nicolaus Copernicus<span> published a new theory stating the earth revolves around the sun. This is known as the Copernican theory.</span>
C is a non-metal and so is O. So the answer is CO