Answer:
The Big Crunch hypothesis is a symmetric view of the ultimate fate of the universe. Just as the Big Bang started as a cosmological expansion, this theory assumes that the average density of the universe will be enough to stop its expansion and begin contracting.
Explanation:
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Answer:
181 m
Explanation:
a = v² / r
6.09 (9.81 m/s²) = (104 m/s)² / r
r = 181 m
Answer:
Explanation:
The amount of heat energy of any material to get moved per meter length for per unit change in temperature is called coefficient of thermal conductivity.
The value of coefficient of thermal conductivity is different for different materials.
Answer:
The refraction angle of the light in the liquid is 8.40 degrees.
Explanation:
Given:
A ray of light passing through air to liquid.
Air is medium 1 and liquid is medium 2.
Angle of incidence 
= 13°
Refractive index, 
= 1.54
We have to find the angle of refraction:
Let the angle of refraction be "
" .
Formula to be used:
⇒ 
Note:
Index of refraction of air 
= 1
Accordingly:
Using Snell's law and plugging the values.
⇒
⇒ 
⇒ 
⇒ 
<em>...sin(13) =0.2249</em>
⇒ 
⇒ 
⇒ 
degrees.
⇒ 
degrees<em> ...Rounded to 2 decimal place.</em>
The refraction angle of the light in the liquid is 8.40 degrees.
