Consider a 250-ft length of 18-gauge copper wire.
a. Compute the resistance of this wire.
b. What are the resistive losses if this wire connects a 120V outlet to power a 60-W light bulb?
(Assume that you have two 250-ft lengths of wire to make this connection, to get out and
back.)
Solve the following dynamic system $\ddot{x} + 10\dot{x} + 9x = e^{-5t}$, $x(0) = 2$, $\dot{x}(0) = 0$