Answer:
Part a)

Part b)

Explanation:
As we know that magnetic flux through the loop is given as

now we have

now rate of change in flux is given as

now we know that



Now plug in all data


Part b)
Now the radius of the loop after t = 1 s



Now plug in data in above equation


The answer is 18000 kgm/s
Momentum is mass times velocity so just do 750•24.
The last one is correct (D)
Answer:
it will double because im right