Answer:
The critical angle is
Explanation:
Snell's law is mathematically represented as
Where is the refractive index of medium 1
is the refractive index of medium 2
Now substituting for and ac which denotes the critical angle for
Making ac the subject
From the question we are told that
The is implies that ac < 90
since
Critical angle is that angle of incidence that result to a 90 degree angle of refraction
I know the answer to 1 minute
6000 joule energy
So I assume 30 seconds would be
3000 joule energy
1000 m/s
100m x 10hz=1000m/s
Answer: Ankara
2 and 3
South African
Explanation:
I don’t know number 3 sorry
B. sent through the atmosphere