A 29000 lb engine is pulling two freight cars up a 1.3 % incline. The weight of the first freight car is 29000 lbs, and the weight of the second freight car is 10500 lbs. The train is accelerating at 0.33 ft/s2 as it goes up the hill.

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.

The necleus of an atom is made up of what subatomic particles?

What is special about a dc circuit ?