taking the resistivity of platinoid as 3.3 x 10-7 m, find the resistance of 7.0 m of platinoid wire of average diameter 0.14 cm.

Explanation:

The resistance of a wire is given by the equation:

where

is the resistivity of the material

L is the length of the wire

A is the cross-sectional area of the wire

In this problem, we have a wire of platinoid, whose resistivity is

The length of the wire is

L = 7.0 m

And its radius is

, so the cross-sectional area is

Solving for R, we find the resistance of the wire:

c) up

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that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

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