Homework Help: Physics

Posted by Tommy on Monday, October 4, 2010 at 11:44pm.

1) Suppose that you wish to fabricate a uniform wire out of 1.15 g of copper. Assume the wire has a resistance R = 0.600 , and all of the copper is used.
(a) What will be the length of the wire?
m?

(b) What will be the diameter of the wire?
痠?

2) A rectangular block of copper has sides of length 5 cm, 18 cm, and 34 cm. If the block is connected to a 4.0 V source across two of its opposite faces of the rectangular block, what are the currents that the block can carry?
(a) the maximum current
A?

(b) the minimum current
A?

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