To what temperature (in °c) must you raise a copper wire, originally at 20.0°c, to triple its resistance, neglecting any changes in dimensions?

528.91°C

Explanation:

Neglecting any change in dimensions, the way that the resistance of a material changes after a variation in its temperature is given by the expression:

Where is the original resistance.

is the temperature coefficient of the material, that relates the percentage that the resistance of the material will increase after a raise of 1°C in temperature. For copper, this value is equal to 0.00393/°C.

and is the final and original temperature, respectively.

that would be b i just took the test : )

the independent variable, or the one that is intentionally manipulated is the speed.