The resistivity of a 1.0 m long wire is 1.72 × 10-8 ?m and its cross sectional area is 2.0 × 10-6 m2. If the wire carries a current of 0.20 A, what is the voltage across the wire?

A) 17 mV
B) 0.90 mV
C) 1.7 mV
D) 10 mV
E) 90 mV


C

Physics & Space Science

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A particle with charge 2?C is placed at the origin. An identical particle, with the same charge, is placed 2 m from the origin on the x axis, and a third identical particle, with the same charge, is placed 2 m from the origin on the y axis. The magnitude of the force on the particle at the origin is:

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Why would anyone be interested in mining material from an asteroid?

What will be an ideal response?

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