Write the equation δ ( t ) ∗ δ ( t ) . Use d(t+A), u(t+B), r(t+A) to represent the delay, step and ramp functions respectively. A is a positive or negative constant. If you need to scale a function use B*u(t) for a step function, with zero delay scaled by B.

Which of the following is an easy way to remember the modified “x” tire rotation? a. nondrive wheels straight, cross the drive wheels b. drive wheels straight, cross the nondrive wheels c. drive wheels crossed, nondrive wheels straight d. drive wheels crossed, nondrive wheels crossed

Determine whether or not it is possible to compress air adiabatically from k to 140 kpa and 400 k. what is the entropy change during this process?

Thermal stresses are developed in a metal when its a) initial temperature is changed b) final temperature is changed c) density is changed d) thermal deformation is prevented e) expansion is prevented f) contraction is prevented