Question

Water enters the heater with 25 degree Celsius and leaves at 78 degree Celsius. The temperature change is Answer degree Fahrenheit.?

Answer 1

Water enters at $T_1=25^oC,T_2=78^oC$ is the temperature of leaving the water

Change in temperature= $\Delta T=T_2-T_1=78-25=53 ^oC$

So, we know the relation between temperature in degree Celsius and temperature in degree Fahrenheit

$T(^oF)= \frac{9}{5}(T^oC)+32$

$T(^oF)= \frac{9}{5}(53)+32$

$T(^oF)=127.4 ^oF$