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clc
//Chapter2
//Ex_2.4
//Given
T_summer=20 //in degree celcius
T_summer=T_summer+273 //in kelvin
T_winter=-30 //in degree celcius
T_winter=T_winter+273 //in kelvin
//we have R is proportional to A*T
//Hence
R=(T_summer-T_winter)/T_summer
R=R*100
disp(R," Percentage change in the resistance of a pure metalwire from Saskatchewans summer too winter in % is ")
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