A wire of radius r and length l and resistivity rho has a
A wire of radius r and length L and resistivity ρ has a resistance R. Estimate what is the new resistance if the wire is stretched to 4 times its original length. (Hint: volume is constant)
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an 845 kilogram race car can drive around an unbanked turn at a maximum speed of 61ms without slipping the turn has a
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a wire of radius r and length l and resistivity rho has a resistance r estimate what is the new resistance if the wire
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