Problem 3:A first order measurement system (parallel or low pass) is subjected to a step input s;(t) =KAU(t). The output signal s,(t) reaches 90% of the steady state output amplitude

(s,(0) DKA) in 100 [ms] (i.e. So(t) = 0.9 KA when t1=0.1 [s]). What is the time constant (r) of the measurement system?