Consider an LTI (linear time-invariant) system whose impulse response h[n] and input signal x[n] are given as:

h[n] = u[n-2]

x[n] = (1/2)^n u[n-4]

Find the output y[n] of the system for all values of n. Show every step of your work, making sure to label the axes, as well as any important points/values in your graphs.

Fluids at rest possess no flow energy. a)- true b)- false

Coiled springs ought to be very strong and stiff. si3n4 is a strong, stiff material. would you select this material for a spring? explain.

Ajournal bearing has a journal diameter of 3.250 in with a unilateral tolerance of 20.003 in. the bushing bore has a diameter of 3.256 in and a unilateral tolerance of 0.004 in. the bushing is 2.8 in long and supports a 700-lbf load. the journal speed is 900 rev/min. find the minimum oil film thickness and the maximum film pressure for both sae 20 and sae 20w-30 lubricants, for the tightest assembly if the operating film temperature is 160°f. a computer code is appropriate for solving this problem.