Answer:
The angle from the normal is 15.1°.
Explanation:
We can find the angle by using Snell's law:

Where:
n₁: is the first medium (glass) = 1.5
n₂: is the second medium (air) = 1.0
θ₁: is the first angle (in the glass) = 10°
θ₂: is the second angle (in the air) =?

Therefore, the angle from the normal is 15.1°.
I hope it helps you!
C2 = a2 + b2
29^2 = a^2 + 20^2
841 = a^2 + 400
441 = a^2
a = 21
Answer:
normal force, the pluck will move off in a different direction
Explanation: