Answer:
(b) 32.2°
Explanation:
Using Snell's law as:
Where,
is the angle of incidence ( 30.0° )
is the angle of refraction ( ? )
is the refractive index of the refraction medium (Material B, n=5 / 4)
is the refractive index of the incidence medium (Material A, n=4 / 3)
Hence,
Angle of refraction = 
= 32.2°
Answer: A.Math plays a vital role in scientists’ search for alien life as it helps them determine where and when life might exist and communicate with it.
Explanation:
this is the only one i had found that was better than all of them....i hope it's correct, let me know if it isn't.
Answer:
Vertically
Explanation:
Pressure changes faster as we move vertically because as we go to the height from the surface of the earth. The density of air becomes lesser in comparison with the surface of the earth. So, as we move vertically pressure moves faster than in comparison with the vertical movement.
The best example that describes the above statement is the hill station.
D.Both B and C
As they not allow heat to pass through and usually non metal
Answer: D. movement of material along a coast by waves that approach at an angle to the shore.
Explanation:
Longshore drift is also referred to as the littoral druft and it means the sediment that is moved by the longshore current.
Longshore drift is the movement of material along a coast by waves which approach at an angle to the shore but then recede down the beach.
Therefore, the correct option is D.
