You and your friends want to tour the southwest by car. You will visit the nine states below, with the following rather odd rule: you must cross each border between
neighboring states exactly once (so, for example, you must cross the Colorado-Utah
border exactly once). Can you do it? If so, does it matter where you start your road trip?
What fact about graph theory solves this problem?

Asingle-geared blanking press has a stroke of 200 mm and a rated capacity of 320 kn. a cam driven ram is assumed to be capable of delivering the full press load at constant force during the last 15 percent of a constant-velocity stroke. the camshaft has an average speed of 90 rev/min and is geared to the flywheel shaft at a 6: 1 ratio. the total work done is to include an allowance of 16 percent for friction a) estimate the maximum energy fluctuation b) find the rim weight for an effective diameter of 1.2 m and a coefficient of speed fluctuation of 0.10

An air compression refrigeration system is to have an air pressure of 100 psia in the brine tank and an allowable air temperature increase of 60°f for standard vapor compression cycle temperatures of 77 f entering the expansion cylinder and 14 f entering the compression cylinder, calculate the coefficient of performance a. 2.5 b 3.3 c. 4.0 d. 5.0

What is the heat treatment of metals? what is the benefit of it? why and how it's useful? answer in details, do not write by hand.