Based on the following, what is the biggest advance of additive manufacturing? (Select all that apply.) As the name implies, 3-D printing produces a three-dimensional object. It starts with a thin layer of powder on a building platform. The powder may be plastic, metal, wood pulp, cobalt, or other materials, or, at some point, human tissue.

Additive manufacturing will permit time travel.
Additive manufacturing might produce skin for burn victims.
Additive manufacturing is rarely sustainable.
Additive manufacturing is purely science fiction.

Amass of 1.5 kg of air at 120 kpa and 24°c is contained in a gas-tight, frictionless piston-cylinder device. the air is now compressed to a final pressure of 720 kpa. during the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the boundary work input during this process.

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

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?