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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:

where is the

answer: c) researchers say that roald dahl is one of the most famous children’s writers of all time.

roald dahl was a welsh novelist, short story writer, poet, screenwriter and pilot. he is particularly famous for his works for children, such as james and the giant peach, matilda, the witches, fantastic mr. fox and charlie and the chocolate factory.

out of these options, c is the one that supports the claim of dahl being close to his family the least. option a states that he was close to his mother and grandmother. option b states that his mom used to tell him stories. option d says that dahl told his daughters bedtime stories. however, option c does not talk about dahl's family at all.