A 6.7 cm diameter circular loop of wire is in a 1.27 T magnetic field. The loop is removed from the field in 0.16 ss . Assume that the loop is perpendicular to the magnetic field. Required:
What is the average induced emf?

The induced emf is

Explanation:

From the question we are told

    The diameter of the loop is  

    The magnetic field is  

    The time taken is  

Generally the induced emf is mathematically represented as

Where  N =  1 given that it is only a circular loop

Where  

   where is  1.27 T  given that the loop of wire was initially in the magnetic field

    and   is  0 T given that the loop was removed from the magnetic field

Now the area of the of the loop is evaluated as

Where r is the radius which is mathematically represented as

substituting values

So

So

=>    

=>  

momentum of soft ball three times less than baskey ball

what is the actual question though?