Frequency, is the number of times in a cycle
Answer:
20.4
Explanation:
Given:
y₀ = 0 m
v₀ = 20.0 m/s
v = 0 m/s
a = -9.80 m/s²
Find: y
v² = v₀² + 2a (y − y₀)
(0 m/s)² = (20.0 m/s)² + 2 (-9.80 m/s²) (y − 0 m)
y = 20.4 m
I think you meant bending :).
Anyway when light enters a different medium the bending of light is refraction. Depending on the medium (i.e if it is denser or rarer) it will bend light closer or away from the normal ray (i.e a ray that hits the medium at 90 degrees does not bend).
Hope this helps :).
