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**1. Homework Statement**

Assume that the application of a temperature sensor approximates 1st order

conditions. The sensor has a time constant of 5 seconds and is suddenly subjected

to a temperature step of 25-200°C. what temperature will be indicated 10 seconds

after the process has been initiated?

**2. Homework Equations**

ΔT(t)= ΔTo (exp-t/τ), where

ΔT0 is the initial temperature difference, at time t= 0

ΔT is the initial temperature difference, at time t

τ= time constant

**3. The Attempt at a Solution**

i did not get that what does statement temperature step means. and what's ΔT(t) and what's ΔTo in this numerical