Read the passage. "i wonder where this river really does begin? " tip mused. that was an old and a favorite mystery which the map did not clearly explain. on the map the little black line stopped somewhere in western kansas; but since rivers generally rose in mountains, it was only reasonable to suppose that ours came from the rockies. its destination, we knew, was the missouri, and the hassler boys always maintained that we could embark at sandtown in floodtime, follow our noses, and eventually arrive at new orleans. (from "the enchanted bluff" by willa cather) from what point of view is this selection told? a. first person b. second person c. third person limited d. omniscient

Asnwer by Mimiwhatsup: A.First person

Why by Mimiwhatsup: This selection is told from the first person point of view. (The author uses the words such as "ours" and "we" which are words that are used in first person).

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: