PLEASE HELP I NEED IT QUICK

Hey,

I think we should nominate Jose for student council. He has perfect attendance and straight A’s, and he treats people nicely. Teachers are going to ask us for nominations, and I think Jose is the perfect choice. Will you help me nominate him? Let’s do it!

Who is the intended audience for this letter?

a friend

a teacher

a parent

a principal

a friend iswhat I think it is

the answer is b "spewing black smoke", i took the test and got 100%   hope i

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: