Aniviler if you

Welcome exam I write on Friday and there is a possibility that the same as this one that I posted it to me millet if anyone can help solve or. to me at least that the initial instructions for each task, because we do not succeed himself much, plus I do not know if I save. Lp fool Posts: 33 Joined: steam table 8/21/2010 17:02
Pretty please if anyone can take time because if the test will be the same and I do not know how I really cared otherwise learn the basics and we are becoming clear but we will run out of time to thoroughly learn but I need the exam as a condition of the third year: The fool Posts: 33 Joined: 8/21/2010 17:02
1) calculate the integral within these limits. 2) Recognize the characteristics of the cycle (which changes are adiabatic, which isochoric etc ...). Then you go by definition: calculate the work and transfer the heat you want = efficiency. Given that it is more poorly steam table written I think it is meant that for about all how it works "standard" steam turbine. 3) Do you have input the power and calorific value. Power is energy per unit time and the calorific value of energy per unit mass. This movement is what I directly. Somewhere in between You have to consider the efficiency. 4) As 3). Aniviller Posts: 7098 Joined: 15.11.2004 18:16
1 In order equation for absolute work of the selected'm A plus as is the Krautu on page 175 in (your) above instructions to resolve it less? Do I then made a mistake? And if I then why is there less? Otherwise, the problem is solved steam table correctly? Lp fool Posts: 33 Joined: steam table 8/21/2010 17:02
I've written thermodynamic definition (still talking about work / heat / energy working substance, negative work means that work submitted). Practically oriented mechanical engineering "absolute work" can be defined as wants a bit, you have to be aware that when you want to use items for conservation law (Q + A = change in internal energy), a work means integral with a minus. If you're talking about the work that the group will receive pac minus one, the important thing is to always know what exactly describing a quantity. Aniviller Posts: 7098 Joined: 15.11.2004 18:16
Aniviler if you're steam table ready to solve another third and fourth task I'll give you 30 respectively. negotiated all subject'll give you the phone pics in private because it would really use this function solved because we do not grow the best rescue ... Lp fool Posts: 33 Joined: 8/21/2010 17:02
Hello there. I need help with tasks thermodynamics we really do not lie: 1) 1m3 of air at a pressure of 1 bar and ambient temperature of 20 quick carve up to 1.5 m3. Colic dream is air pressure immediately after the change, steam table if the value of the constant 1.4? Once-character dream then air temperature? Colic sleep the air temperature after a long time? Colic dream then pressure? With this, I have given only the equation: (P1 * V1) / T1 = (P2 * V2) / T2 = constant 2) bullet plasticine temperature equal to the outside steam table temperature and weight 0.5 kg descend with you son 3 m to fall freely to the ground, where standstill. For how many will turn its internal energy, if the work force of air resistance can be negligible marimo? How much heat is awarded plasticine when re-cooled steam table to ambient temperature? 3) of 0.1 kg of ice at a temperature of 0 C in water to rotate the slides with one liter of water at 20 C. colic sleep temperature of the water when the ice has melted and all the water is well axle sa? Information on the density of water and the other constants, steam table it needs to in this task, poi ci with the lecture notes! 4) Zogo weight of 1 kg down with you son 2 m to fall on the floor and off. To colic snow you son after a rebound lifted a ball, if to overcome the force of air resistance 1 J of work done in a rebound while its internal energy increased approximately 2 J? anjaD Posts: 81 Joined: 8/23/2010 steam table 12:04
If I remember rightly, yo important fact that it is fast scaling, in which case the system does not manage to exchange heat with its surroundings, steam table so the change in entropy is zero (or adiabatic. Izentropičen process), in this case, where is your given constant, from here you can calculate the pressure in November, then the equation your new temperature. After a long time the temperature is again equal to the neighborhood: and this is the isochoric steam table change, and then calculate the pressure out of the equation. George Posts: 585 Joined: 2/27/2006 11:09
for the constant, this constant is the ratio between the spec. heat at const. a pressure and volume. For dvoatomne gases is 1.4, so I skleal that you have given this constant. George Posts: 585 Joined: 2/27/2006 11:09
Re: Thermodynamics
You need a relationship between vapor pressure and temperature. Water is tabulated, but you can calculate the Clausius-Clapeyron equation with the integration of a known reference point (100 degrees at normal pressure). Aniviller Posts: 7098 Joined: 15.11.2004 18:16
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