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A pipe has an outer radius of 4 1/2 cm. If the metal is 1/4 cm thick, what is the inner diameter of the pipe? Please help me!!! You not you just subtract from the or the wall thickenss, then double it to get the id? Draw two concentric circles and see if...

Here's the extremely short answer. Conductors are always full of movable electric charges. Voltage pushes charges through the conductive object which has a certain amount of electrical resistance or "friction," and this heats up the resistive object. The...

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