Hen a thin copper wire that is 178 m long is connected between a 1.2-v potential difference, a current of 2.0 amps flows through the wire. what is the diameter of this wire? the resistivity of copper is 1.72 × 10-8 ω • m.

The resistance of the cylindrical wire is .

Here is the resistance, is the length of the wire and is the area of

cross section. Since the wire is cylindrical .

From the above 2 equations,

The resistance of the wire is given by

Thus, the diameter of the wire is

The diameter of the wire is

he kicked it 10 feet straight up into the air? i think this works.

thermal energy is the answer