Answer:
n = 1.42
Explanation:
The refractive index for a medium is given by the ratio of the speed of light in vacuum to the speed of light in a medium.

So, the refractive index of the medium is 1.42.
A. The sound will decrease in volume
Complete Question
The Complete Question is attached below
We have that the Cartesian components of tension
is
From the Question we are told that



Generally the equation for
is mathematically given as

Where

Therefore



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average velocity is vector displacement / time
time is "almost exactly one hour"
disp = -10m
v= -10/1x60x60 = -1/360m/s
Answer:
true
Explanation:
the wavelength of AM radio is 10 m whereas FM has 1 m