Answer:
= 2.33
Explanation:
.According to snell's law:
n1sin i = n2sin r ,
where n1 is refractive index of the medium in which incident ray is travelling, n2 is the refractive index of the medium in which refracted ray is travelling,
i is angle of incidence,
r is angle of refraction.
Given that,
n1 = 1,
i = 51 degrees,
r = 19.5 degrees. ,
n2= ?
So,
1*sin 51 = n2 sin 19.5
=> n2 = sin51 / sin19.5
= 2.33
You could put ice, put it on wheels!
Answer:
Troposphere, stratosphere, mesosphere and thermosphere. The next region is the exosphere, but that region is 500+ km from the Earth's surface.
<span>If
a contour interval of a topographic map is 50 feet, there would be 3
contour lines drawn between sea level and an elevation of 175 feet.</span>
Answer:
The closer a planet is to the Sun, the warmer it would be. Gases move faster the hotter they are and if they are fast enough (escape velocity), they can escape the gravitational field of their planet and spread in the space. Further planets are gaseous because their gases don't have the energy to escape their gravitational pull