It's the angle made by the incident ray when it's perpendicular to the surface. (Perpendicular lines are the lines that form a graph or like a 90-degree angle)
Answer:
a
b
c
Explanation:
From the question we are told that
The frequency is
The length of the vibrating string is
The mass is
Generally the wavelength is mathematically represented as
=>
=>
Generally the wave speed is
=>
=>
Generally the tension on the wire is mathematically represented as
=>
=>
Answer:
B and C!
Explanation:
I just did it on edge. I hope this helps!