Look at the diagram showing resistance and flow of electrons.

which labels best complete the diagram?

a.
x: high resistance
y: low resistance
z: flow of electrons

b.
x: low resistance
y: flow of electrons
z: high resistance

c.
x: flow of electrons
y: high potential energy
z: low potential energy

d.
x: low potential energy
y: high potential energy
z: flow of electrons

Air enters a compressor operating at steady state at 1.05 bar, 300 k, with a volumetric flow rate of 93 m3/min and exits at 12 bar, 400 k. heat transfer occurs at a rate of 15.5 kw from the compressor to its surroundings. assuming the ideal gas model for air neglecting kinetic potential energy effects, determine the power in put in kw.

During takeoff, the sound intensity level of a jet engine is 170db at a distance of 34 m. what's the sound intensity level at a distance of 1.0 km?

Air is contained in a variable-load piston-cylinder device equipped with a paddle wheel. initially, air is at 400 kpa and 17°c. the paddle wheel is now turned by an external electric motor until 75 kj/kg of work has been transferred to air. during this process, heat is transferred to maintain a constant air temperature while allowing the gas volume to triple. calculate the required amount of heat transfer in kj/kg.