9: The magnetic field at the center of a solenoid L = 5 cm long is 8 = .73 T when a current of [ = 7.5 A moves through the solenoid wire. i, 50% Part (a) Solve the formula for the magnetic field near the center of a long, tightly wound solenoid for the number of turns, IV, in the solenoid. The expression should be in terms of the given variables. N= Submit Hint | | Hints: 0% deduction per hint. Hints remaining: 1 Feedback: 090 deduction per feedback. o & 50% Part (b) Calculate the value of the number of turns, M