Alow-pass first-order instrument has a time constant of 20 ms. find the frequency, in hertz, of the input at which the output will be 93% of the dc output.

Arunner is training for an upcoming marathon by running around a 100-m-diameter circular track at constant speed. let a coordinate system have its origin at the center of the circle with the x-axis pointing east and the y-axis north. the runner starts at (x, y) = (50 m, 0 m) and runs 2.5 times around the track in a clockwise direction.