We usually think of wires as perfect (r=0) conductors, which is not quite accurate. real wires have resistance, and an effort is made to keep this resistance small – usually less than an ohm. a. design a uniform cylindrical wire that has a resistance of 25 mω and uses $1 worth of copper. what are the length and diameter of your wire? note: the resistivity (⍴) of copper is 1.72x10-8 ωm, and you should assume that copper is currently $2.69 per pound. b. this wire is cut in half, and the two strands are used to power a toaster

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Ithe undersigned only for use your own email and delete any and copies and of the itself and to be there is a good timewhat does a decrease in temperature indicate about the molecules in a sample of liquid water? decreased chemical energy of the moleculesdecreased kinetic energy of the moleculesincreased chemical energy of the moleculesincreased kinetic energy of the moleculeshow does a sample of helium at 15 â°c compare to a sample of helium at 215 k? the helium at 15 â°c has a higher average kinetic energy than the sample at 215 k.the helium at 15 â°c has lower nuclear energy than the sample at 215 k.the helium at 15 â°c has slower-moving atoms than the sample at 215 k.the helium at 15 â°c has smaller atoms than the sample at 215 k.