Problem D1:
You want to know the temperature of a liquid, so you use a resistor as a
thermometer. You place the resistor in ice water (0 Deg C) and measure
its resistance to be 120 Ohms. You then place the resistor in boiling
water (100 Deg C) and measure its resistance to be N_{1} Ohms.
Finally you place the resistor in the liquid and measure its resistance
to be n_{2} Ohms. If the temperature of the liquid is
n_{3} Deg C,
what is n_{3}? Note that n_{1} and n_{2} have
units of Ohms, and n_{3} is in Deg C.

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