Hello, can someone please help me with this!

The election of Hayes as president.

Explanation:

During the 1877 presidential election, Democrat Samuel J. Tilden feared most of the popular vote, but lost the election because the electoral college elected Republican Rutherford B. Hayes. Obviously, the Democrats did not accept this decision, since it removed the electoral power of the people. To solve this problem, the 1877 compromise was created, in which Hayes was elected, but he undertook to finalize the reconstruction of the south, which was the main campaign promise of the Democrats.

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm.   the wire diameter is d = 0.9 mm.   the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a                                          

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2)   in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation: