Nebraska tractor test data shows that a tractor has an efficiency of 22 percent when developing 110 hp pulling a load of 6,600 lbs at 7 mph. determine the rate at which this tractor uses fuel (gal/hr) if a gallon of diesel fuel releases 140,000 btu of heat when burned. diesel usage rate = number gal/hr

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.

Suppose that recording station n is located 200 km north of the epicenter of an earthquake, and recording station s is located 100 km south of the epicenter of the same earthquake. which of the following statements would be true?

What do elements in a family tend to share. a.) similar periods b.) similar groups c.) similar atomic symbols d.) similar chemical properties and characteristics