Early telephone receivers used a stationary coil consisting of many turns of ____ wrapped around the poles of a permanent horseshoe magnet.

a. fine wire
b. striated wire
c. twisted wire
d. thick wire


a. fine wire

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Add dimensions C and B, and then express the answer as a fraction.

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If poor-quality roughages are fed, extra ____________________ may be needed

Fill in the blank(s) with the appropriate word(s).

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A wall brace is positioned so that it makes an angle of 42°0' with the floor. The brace is fastened to the floor at a distance of 11.25' from the foot of the wall. Compute the required length of the brace rounded to the nearest hundredth foot.

Fill in the blank(s) with the appropriate word(s).

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Name the Chicago architect and engineer credited with designing the fi rst steel-frame structure.

What will be an ideal response?

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