Physics, 10.07.2019 21:20 Dhejxbdbbxbdbbx
Arigid box containing one mole of air at temperature to (in k) is initially in thermal contact with an "infinite' heat-capacity reservoir" at the same temperat ure to. the box is removed from the reservoir and a cyclic engine is used to take some heat from the reservoir and put some into the air in the box. what is the minimum amount of work from to to ti? express w in terms of to, ti and the gas constant r, and state units. ignore vibrational degrees - of-freed om in the air molecules and the heat capacity of the container. would inclusion of vibrational degrees- of- freedom increase or reduce the value of w?
Answers: 3
Physics, 21.06.2019 20:00
You notice a very one-dimensional-thinking snail crawling along one rail of a railroad track. naturally, you remove it to a safer place. but before you do, you observe it as it moves from position xi = -92.9 cm to position xf = -64.9 cm along the rail, as measured from a point where one rail abuts the next. what is the snail\'s displacement δx in centimeters?
Answers: 1
Physics, 22.06.2019 06:20
Atwo-stage air compressor operates at steady state, compression 10m^3/min of air from 100 kpa and 300k to 1200 kpa. an intercooler between the two stages cools the air to 300k at a constant pressure of 350 kpa. the compression processes are isentropic. a) calculate the power required to run the compressor, in kw b) compare the result to the power required for isentropic compression from the same inlet state to the same final pressure.
Answers: 1
Physics, 22.06.2019 11:00
I'm thinking it's 2 you are asked to explain the earth's magnetic field. which is the best reply? 1. the earth's magnetic south is similar to the north pole of a magnet. 2. the earth's core has a strong magnetic charge similar to the south pole of a magnet. 3. the earth's geomagnetic south is similar to the south pole of a magnet. 4. the earth's magnetic charge is not centered at either pole; it varies based on location.
Answers: 1
Arigid box containing one mole of air at temperature to (in k) is initially in thermal contact with...
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