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if resistance of wire A is 4 times the resistance of wire B calculate the ratio of the cross-sectional areas of the wire and the ratio of the radii of the wires |
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Answer» Explanation: Some scales, such as the traditional beam balance, measure mass directly by COUNTERACTING the downward force by another equal downward force on the OPPOSITE side of the PIVOT. On a beam balance, you add enough mass to the opposite pan to COUNTERBALANCE the unknown mass. No force is measured. |
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