Answer:1.7 rev/s
Explanation:
Given
Frequency of wheel 
angular speed 
mass of wheel 
diameter of wheel 
radius of wheel 
mass of clay 
the radius of the chunk of clay 
Moment of inertia of Wheel

Combined moment of inertia of wheel and clay chunk

Conserving angular momentum

Common frequency of wheel and chunk of clay is

I can see three different transitions here:
3 --> 1
3 --> 2
followed by
2 --> 1 .
So we should expect to see three different 'colors'
being emitted from this excited mob.
The average speed of the car is
(the mile marker he passes at the end of the 1.75 h) minus 115
divided by
(1.75 hours) .
The unit is 'miles per hour'.
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