Which excerpt from Tinker v. Des Moines shows how precedent helps
support an argument?

The correct answer is B.

Explanation:

The excerpt from Tinker v. Des Moines that shows how precedent helps support an argument is: "Other cases cited by the Court do not, as implied, follow the McReynolds reasonableness doctrine. West Virginia v. Barnette, 319 U.S. 624, clearly rejecting the 'reasonableness' test, held that the Fourteenth Amendment made the First applicable to the States". This excerpt shows how the Supreme Court uses decisions of other cases already resolved to support arguments within cases in decision at the moment .In the present case, the Court uses the precedent West Virginia v. Barnette, in which the doctrine of "reasonableness" of McReynolds is not admitted, to apply it to the case Tinker v. Des Moines.

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: