Based on the results of Problem 88, the U.S. Navy has developed ways to make the magnetic field from its own submarines as small as possible. One way is by wrapping a solenoid around the hull and passing a current through the solenoid so that the field produced by the solenoid approximately cancels the field from the hull. Take the diameter of the submarine to be 20 m and its length to be 50 m. Assume the field of the submarine alone to be 0.0010 T. Assuming a solenoid with 1000 turns, what is the approximate current required in the solenoid?