Which of the following from “the tell-tale heart” is an effective use of juxtaposition?
a) it was open— wife, wide open— and i grew furious as i gazed upon it.
b) i smiled, —for what had i to fear? i bade the gentleman welcome.
c) the old mans heartbeat “grew louder—louder! and still the men chatted pleasantly,
d) i had my head in, and was about to open the

i believe the answer is b. we

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:

your eyes are the first things that you open