Through which material would you expect sound waves to move fastest? O A. Iron O B. Water O c. Air O D. Milk
2 answers:
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Hello!
Let's put it into symbols:
Change in velocity =
A measurable interval:
This division is:
We can recognize this as the Average Acceleration
Let's put it into symbols:
Change in velocity =
A measurable interval:
This division is:
We can recognize this as the Average Acceleration
The general equation for the forces acting on the passengers at the topmost point of the ferris wheel is
where
mg is the weight of the passengers
R is the normal reaction of the cabin
is the centripetal force
In order to feel weightless, the normal reaction felt by the passengers should be zero. Therefore, the equation becomes:
or
where
is the angular frequency of the wheel and r is its radius. Since we know its radius,
we can calculate the angular frequency:
From which we find the frequency at which the ferris wheel should rotate:
This is the number of revolutions per second, so the number of revolutions per minute will be
where
mg is the weight of the passengers
R is the normal reaction of the cabin
In order to feel weightless, the normal reaction felt by the passengers should be zero. Therefore, the equation becomes:
or
where
we can calculate the angular frequency:
From which we find the frequency at which the ferris wheel should rotate:
This is the number of revolutions per second, so the number of revolutions per minute will be