Answer:

Explanation:
First we convert 2 cycles/s to angular velocity knowing that each circle has an angle of 2π

Then we calculate the moment of inertia of the cylindrical shell, assuming there's no mass inside the wheel (only at the rim):

So the kinetic energy of this is

Answer:
(A-) Number of turns in secondary coil will be<u> less than 125.</u>
(B-) EXPLAIN- The voltage is to be lowered.<u> The voltage will be reduced from 120 to 9 volts.</u> As a result, a<u> step down transformer </u>will be used, indicating that the secondary coil's number of turns would be less than 125.
(C-)<u> The number of turns on the secondary coil is 12.5</u>
<u></u>
Explanation:
- STEP DOWN TRANSFORMER - A step-down transformer transforms high voltage (HV) and low current from the transformer's primary side to low voltage (LV) and high current on the secondary side. A phase down transformer is the opposite of this.
In electrical networks and transmission lines, a step-down transformer can be used in a number of ways.
<u>Step down transformer formula-</u>

We are given with the -
Primary voltage
= 120V
Secondary voltage 
Number of primary turns 
- <u>To calculate the number of turns on the secondary coil -</u>
Since , the transformer ratio is given as -

So, the number of turns on the secondary coil is - 
Putting , the given values -:

= 12.5
<u>Therefore , the number of turns on secondary coil is 12.5 .</u>
The answer is: To have easy access to a coolant for the reactor.
Hope this helps!:)
~Scarlett
Answer:
<em>Elevator That Is Moving Downwards At A Constant Speed Of 4.9 M/S. What Is The Magnitude Of The Net Force Acing On The Student?</em>
<em>This problem has been solved!</em>
<em>This problem has been solved!See the answer</em>
<em>This problem has been solved!See the answerA student weighs 1200N. They are standing in an elevator that is moving downwards at a constant speed of </em><em>4.9 m/s. What is the magnitude of the net force acing on the student?</em>