The Basics. The brief definition of Thermodynamics is . the science concerned with the relations between heat and mechanical energy or work, and the conversion of one into the other: modern thermodynamics deals with the properties of systems for the description of which temperature is a necessary c.... ID: 645080 Download Presentation

The Basics. The brief definition of Thermodynamics is . the science concerned with the relations between heat and mechanical energy or work, and the conversion of one into the other: modern thermodynamics deals with the properties of systems for the description of which temperature is a necessary coordinate.

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heat
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Thermodynamics

With Ryan Conrad II

Slide2The Basics

The brief definition of Thermodynamics is

the science concerned with the relations between heat and mechanical energy or work, and the conversion of one into the other: modern thermodynamics deals with the properties of systems for the description of which temperature is a necessary coordinate

. I will be going into more detail on the intricacies of Thermodynamics.

Thermodynamics is only concerned with large scale gas interaction observations. The small scale gas interaction observations are described by the Kinetic theory. Thermodynamics was born in the 19th century when people were attempting to make the first steam engine.The total energy in a molecule that is shared equally throughout itself is the Equipartition law. Entropy is a thermodynamic property that is the Measure of a system's thermal energy per unit temperature that is unavailable fordoing useful work.

Slide3Thermodynamics Video

This video Is about Thermodynamics:

https://youtu.be/ddm-lWN6r7M

The Zeroth Law describes three objects in equilibrium

The 2

nd

Law describes entropy and the irreversible loss of heat

The First Law describes the relation with internal energy and heat transfer

Slide4What do you know about Thermodynamics?

In an irreversible process, there is a:

Loss of heat

Gain of heat

No gain of heatKelvin-Planck’s Law deals with:Conversion of heat into work Conservation of heatConservation of workConversion of work of heatWhen two bodies are in thermal equilibrium with a third body, they are also in thermal equilibrium with each other. This statement is called:Second law of thermodynamicsZeroth law of thermodynamics First law of thermodynamicsKelvin Planck's lawWork done in a free expansion process is:MaximumZero positiveminimumThe total energy of a molecule is shared equally by the various degrees of freedom possessed by it. This law is known as:law of degradation of energylaw of equipartition of energylaw of conservation of energynone of these

Correct!

Correct!

Slide5Equations to use

Q=mc T c=specific heat of water which is 4200 1 mL= 1kg T=the change in degrees

(T) to the 4

th

power (in kelvin)= 273+(temp in Celsius) and the M=p V

Slide6Example Problem #1

A rapidly spinning paddle wheel raises the temperature of 200mL of water from 21 degrees Celsius to 25

degrees.

How

much: a) work is done b) heat is transferred in this process?

Slide7Example Problem #2

The temperature of a body is increased from -173 C to 357 C. What is the ratio of energies emitted by the body per second in these two cases?

Temp 1

(in kelvin):

Temp 2(in kelvin):Ratio:

Slide8Example Problem #3

If ice has a density of

.92kg/m to the third,

then what is the volume of 5,000 g of ice?

Slide9Example Problem #4

Is it possible for two objects to be in thermal equilibrium if they are not in thermal contact with each other?

Yes, if they are both at the same temperature. No heat would flow

evenly

if they were connected.

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