Thermodynamics and Statistical Mechanics
Thermodynamics is the study of energy conversion between heat and mechanical work which leads to the macroscopic properties such as temperature, volume, and pressure. Statistical mechanics is the application of probability theory to study the thermodynamic behavior of systems of a large number of particles.
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added How come when heated a chicken leg's bone becomes hotter than the actual meat surrounding it to Thermodynamics and Statistical Mechanics 25 May 2012 03:18
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asked How does pressure affect solids and said it was different from What is solid pressure 24 May 2012 02:24
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added What is the unit of r the gas constant in the ideal gas equation to Thermodynamics and Statistical Mechanics 23 May 2012 20:13
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added Did anybody has the material on triatomic gas molecules to Thermodynamics and Statistical Mechanics 22 May 2012 16:47
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Questions
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Air coming outta a flat tire, a hot pan eventually cooling down, rocks rolling down a mountain, batteries getting charged,...
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in a closed system and with simple engines and machines
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The first law of thermodynamics states that energy can be transformed, but not created nor destroyed. In a nuclear reaction, mass...
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If we consider the "ideal value" to be a Carnot engine operating between the heat source and heat sink of the actual engine,...
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In physics, chemistry and engineering, the term "heat" is used for any energy transferred between two closed systems by any means...
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The constancy of the value of the product of pressure and volume for a closed system (PV) at constant temperature is useful in...
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Entropy is defined by the equation: dS = δQ/T where S is entropy ("d" and δ are mathematical symbols for differential...
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That depends entirely on the solid. Some solids have larger coefficients, some smaller. For example: MaterialVolumetric...
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The specific heat of water is cp = 4,1855 [J/(g·K)] (at 15 °C, 101.325 kPa); the specific heat is dependent on the temperature...
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Integral from initial to final of the internal energy or integral from initial to final of the enthalpy.
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The first law of thermodynamics says that energy can neither be created nor destroyed; it can only be changed from one form to...
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An ice cube wrapped in black cloth would probably melt first because the black cloth would be more conducive to absorbing heat...
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The second law of thermodynamics states that entropy increases. The fact that we cannot build a perpetual motion machine, is one...
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Starting from the same temperature and for the same amount of heat input, aluminum would wind up with a higher temperature than...
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The second law is often represented as declaring that all natural processes cause an increase in disorder. This is a convenient...
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Actually the friction of air on us DOES yield some heat - its just that the amount of heat is not sufficient to be sensed by our...
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By heating the water. Boiling it, which would turn it into steam (a gas). The process of changing liquid water into a gas is...
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It was found to be more fundamental than the other laws. It should therefore be the first law, but at that time, renumbering all...
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No: 1 calorie for 1 g of water, for heating with 1 0C.
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Assuming that the surroundings are above the freezing point of water - yes - it is normal for the temperature on the thermometer...
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This question does not provide enough information on the relevant parameters to even attempt an answer. One would assume that if...
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A bimetallic bar has two different metals bound together. Different metals have different coefficients of thermal expansion. As...
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Time is an intensive property. An intensive property is a property that depends on neither the size of a system where it is being...
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It depends on the material.
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The entropy in a system tends to increase.
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Pretty much all wires are made from materials with a positive coefficient of thermal expansion - which means that as they cool,...
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Increasing temperature affects a reaction in two ways: 1) at higher temperatures the molecules are moving around faster and...
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shaitan eat your double balls
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Potential energy might be thought of as the potential for a body to gain kinetic energy if allowed to move. A ball held several...
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You can decrease the entropy of a static body by reducing the temperature.
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First - a note of clarification for those not familiar with the term "fuel bowser". A fuel bowser is a fuel tanker - usually used...
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You cannot reduce entropy because entropy increases (Second Law of Thermodynamics), if you could, we could have perpetual motion....
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A major part of the heat transfer through a cavity wall lacking insulation is convection - and to a lesser degree radiation. When...
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It's not so much a matter of justifying it as recognizing that the function δq/T has been assigned the name "entropy" -...
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Quite a few devices can be used directly as DC electric generators. This question seems to be structured to ask for a selection...
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The "zeroeth" law defines thermal equilibrium. It also helps define the concept of temperature. Both of these are prerequisite...
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Specific heat is usually defined as the amount of energy that must be added to change the temperature. Another way to define it...
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That depends on how you define "level of entropy". Usually the term refers to the degree of randomness in a system. If the system...
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Nicolas Léonard Sadi Carnot wrote possibly the first text on the scientific analysis of heat engines. He is sometimes referred...
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That depends on what the system is being subjected to... If work is done on a system at constant volume, the temperature would...
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Yes. Two specific heats are commonly defined: CV (constant volume specific heat and CP (constant pressure specific heat). For an...
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Steam traps help out in a couple of ways: Where steam is being passed through a turbine, entrained liquid droplets could cause...
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A tri-atomic molecule should have 3 vibrational degrees of freedom (one for each "end" atom vibrating on its bond with the...
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That depends on whether you are talking about 1 °C or 1 °F. It also depends somewhat on the type of steel. Warming carbon...
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At first glance a refrigerator seems to violate the 2nd law since heat moves from a region of lower temperature to a region of...
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The direction of magnetic field lines are from north to south
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The temperature must highten for ice to melt. The melting point of ice/water is about 0 degrees...
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I understand both to be equivalent. It is for historical reasons that the law has two different names.
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Potential energy and internal energy are different things and unrelated - except when a process converts one to the other. In...
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No. Not only would it not work, but the food inside would get ruined. Bad idea.
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When a steadily flowing gas flows from a larger diameter pipe to a smaller diameter pipe the speed of gas is decreases and...
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Heat can be transferred by 3 mechanisms: conduction, convection, and radiation. When food is covered by aluminum foil, the foil...
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it is the rate of heat loss in an element... it can be measured by a thermometer. hope this helps! :)
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Actually there are equations of state that work pretty well for gases at high pressures and low temperatures, but the simplest...
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Cu; Sp. Heat capacity:0.386 kJ/(kg oC) @ 27oC0.0925 BTU/(lbm oF) @ 100oF
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A heat engine of 100 percent efficiency violates the second law of thermodynamics and is impossible even in theory.
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In order to decide that, we'd have to know the temperature and specific heat capacity of both objects.
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Thermodynamic laws Zeroth law : If two bodies are in thermal equilibrium with a third body, then they are in thermal equilibrium...
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