Answer:
<h2>C. maintenance </h2>
Explanation:
I personally believe one key disadvantages is the cost of maintaining the equipment unlike the gym where you have to subscribe for the month or the year and forget about anything, owning the gym equipment comes with the extra cost and responsibilities of maintenance to the owners.
I believe it’s B but i’m not sure
Answer:
a) I=35mA
b) P=1.73W
Explanation:
a) The max emf obtained in a rotating coil of N turns is given by:

where N is the number of turns in the coil, B is the magnitude of the magnetic field, A is the area and w is the angular velocity of the coil.
By calculating A and replacing in the formula (1G=10^{-4}T) we get:


Finally, the peak current is given by:

b)
we have that


hope this helps!!
U=30m/s
v=10m/s
t=4s
a=10-30/4
a=-5 m/second square
I have some notes here that might help you answer the problem on your own:
<span>α = <span>dω / <span>dt
</span></span></span>Angular acceleration is derivative of angular velocity the same way as linear acceleration is derivative of linear velocity<span>
a = <span>dv / <span>dt
I hope my answer has come to your help. God bless and have a nice day ahead!</span></span></span>