The resistance of a thermistor at 
is 
. At 
the resistance is 
. When the thermistor is placed in water at a particular constant temperature, its resistance is 
.
Assuming that the resistance of the thermistor varies linearly with temperature, calculate the temperature of the water.
The temperature of the water, as measured on the thermodynamic scale of temperature, is 
. By reference to what is meant by the thermodynamic scale of temperature, comment on your answer in (a).
.
