18. A mechanical or electrical system is described by the differential equation y + ω2y = f(t). Find y if f(t)= 1,0 a separately, remembering that f(t) = 0 for t > a. Show that 8>< 1 (1−cosωt), t: 1 [cosω(t−a)−cosωt], t>a. ω2 Sketch the motion if a = 1 T where T is the period for free vibrations of the system;

idk i would have to be there to under stand it

step-by-step explanation:

idk i would have to be there to under stand it

step-by-step explanation:

d is the only accurate one

step-by-step explanation:

134.6 us dollars

step-by-step explanation:

1 us dollar = 1.33 canadian dollars

so, 150 us dollars = 150 × 1.33 = $199.5.

in canada, the money mitchell spent = 20 canadian dollars.

remaining canadian dollars with him = 199.5 - 20 = 179.5.

after mitchell returned to us, he exchanged the remaining canadian dollars to us dollars.

179.5 canadian dollars = 179.5 × 0.75 = 134.6 us dollars.