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Undergrad Calculating Sun Temperature from Tank Heat Absorption

May 10, 2011 · Replies 7 · May 10, 2011

Replies: 7

Views: 2K

Undergrad Super heating water in a microwave oven

May 10, 2011 · Replies 2 · May 10, 2011

Replies: 2

Views: 4K

High School What Is the Constant in Boyle's Law and Combined Gas Law?

May 10, 2011 · Replies 1 · May 10, 2011

Replies: 1

Views: 4K

Undergrad Calculating the amount of emitted heat

May 2, 2011 · Replies 6 · May 10, 2011

Replies: 6

Views: 6K

Undergrad How Does Temperature Affect Dissolved Gas in Beer?

Dec 6, 2010 · Replies 7 · May 10, 2011

Replies: 7

Views: 3K

Should I turn off my upstairs air conditioning during peak hours to save energy?

May 9, 2011 · Replies 3 · May 9, 2011

Replies: 3

Views: 2K

Undergrad Help with basic thermodynamics equation (feel like I'm missing something)

May 9, 2011 · Replies 1 · May 9, 2011

Replies: 1

Views: 2K

Undergrad How much more energy does it take to melt circular glass that is half the size?

May 6, 2011 · Replies 3 · May 9, 2011

Replies: 3

Views: 3K

Graduate Preacceleration in radiation reaction solutions

May 7, 2011 · Replies 2 · May 8, 2011

Replies: 2

Views: 2K

Undergrad How do we determine the convection coefficient for extended surfaces or fins?

May 8, 2011 · Replies 1 · May 8, 2011

Replies: 1

Views: 2K

Graduate How can the differential equation for a sphere in a room be solved?

May 7, 2011 · Replies 6 · May 8, 2011

Replies: 6

Views: 2K

Graduate Equation of Heat: Meaning of ζ

May 6, 2011 · Replies 4 · May 7, 2011

Replies: 4

Views: 2K

Undergrad The amplitude of EM radiation

May 5, 2011 · Replies 16 · May 7, 2011

Replies: 16

Views: 4K

Undergrad Understanding Correlation between Temperature & CO2

May 7, 2011 · Replies 6 · May 7, 2011

Replies: 6

Views: 3K

Undergrad Is Newton's second law somewhat arbitrary

May 1, 2011 · Replies 15 · May 7, 2011

Replies: 15

Views: 5K

Undergrad Steam vs water at the same temperature

Nov 19, 2004 · Replies 17 · May 7, 2011

Replies: 17

Views: 15K

Graduate Recirculating Fluid Turbine: A Thermodynamic Challenge

May 5, 2011 · Replies 19 · May 6, 2011

Replies: 19

Views: 4K

Graduate Understanding the first law of thermodynamics in a particular situation

May 20, 2009 · Replies 25 · May 6, 2011

Replies: 25

Views: 6K

Undergrad Effect of Pressure on Heating (not boiling) water

May 5, 2011 · Replies 1 · May 5, 2011

Replies: 1

Views: 6K

Graduate Heat Pump Thermodynamics Question

May 3, 2011 · Replies 5 · May 4, 2011

Replies: 5

Views: 4K

Graduate Non-ionizing radiation & biological effects

May 3, 2011 · Replies 2 · May 4, 2011

Replies: 2

Views: 6K

Graduate What is the derivation of Fourier's Law of Conduction?

May 3, 2011 · Replies 8 · May 4, 2011

Replies: 8

Views: 3K

Graduate What is the Issue with Extensive Properties of Entropy?

May 3, 2011 · Replies 5 · May 3, 2011

Replies: 5

Views: 3K

Undergrad Thermodynamics: Open or Closed System

May 2, 2011 · Replies 10 · May 2, 2011

Replies: 10

Views: 9K

High School Melting Point: How Heat Changes Liquids to Solids

Apr 28, 2011 · Replies 10 · May 2, 2011

Replies: 10

Views: 5K

Undergrad Newton's third law not universal?

May 1, 2011 · Replies 1 · May 1, 2011

Replies: 1

Views: 2K

Graduate Understanding P-V Diagrams: Work Done and Heat Input in a Closed Loop Process

Apr 30, 2011 · Replies 3 · May 1, 2011

Replies: 3

Views: 2K

Undergrad Calculating Heat Loss from Room with Refrigerator and Heater

Apr 29, 2011 · Replies 3 · Apr 30, 2011

Replies: 3

Views: 5K

Graduate Heat Transfer from Solid Shaft to Bearing

Apr 28, 2011 · Replies 2 · Apr 29, 2011

Replies: 2

Views: 6K

High School What happens when ice is added to water at different temperatures?

Apr 28, 2011 · Replies 1 · Apr 28, 2011

Replies: 1

Views: 2K

Undergrad Does the expansion of air affect the overall volume increase of a glass stopper?

Apr 26, 2011 · Replies 4 · Apr 28, 2011

Replies: 4

Views: 2K

Undergrad Gamma Radiation: How Does It Pass Through & Damage the Body?

Mar 25, 2011 · Replies 15 · Apr 28, 2011

Replies: 15

Views: 5K

Graduate Hydrogen atom at finitine temperature

Apr 27, 2011 · Replies 3 · Apr 27, 2011

Replies: 3

Views: 2K

Graduate Partition function calculation

Apr 26, 2011 · Replies 2 · Apr 27, 2011

Replies: 2

Views: 4K

Undergrad Why does gas expand without temperature increase or external force?

Apr 26, 2011 · Replies 3 · Apr 26, 2011

Replies: 3

Views: 5K

Undergrad Why Half life radiation is constant

Apr 18, 2011 · Replies 66 · Apr 25, 2011

3

Replies: 66

Views: 11K

Graduate Does Figure C Show A Constant Temperature Profile for Plane Wall Heat Transfer?

Apr 24, 2011 · Replies 5 · Apr 25, 2011

Replies: 5

Views: 3K

Undergrad The Science Behind Ice Skating: Debunking the Myth of Pressure and Melting Point

Apr 24, 2011 · Replies 4 · Apr 24, 2011

Replies: 4

Views: 5K

Undergrad Blackbody effect hypothetical question

Apr 24, 2011 · Replies 3 · Apr 24, 2011

Replies: 3

Views: 2K

Graduate Air Properties for higher temperature.

Apr 23, 2011 · Replies 2 · Apr 23, 2011

Replies: 2

Views: 2K

Undergrad How to tell how fast temerature changes.

Apr 18, 2011 · Replies 2 · Apr 18, 2011

Replies: 2

Views: 2K

Undergrad Newton's second law and rounding a corner

Apr 18, 2011 · Replies 2 · Apr 18, 2011

Replies: 2

Views: 3K

Undergrad What do the subscripts in thermodynamic steam tables mean?

Apr 17, 2011 · Replies 2 · Apr 17, 2011

Replies: 2

Views: 66K

Undergrad Is the 1st Law of Thermodynamics different for engineers and physicists?

Apr 1, 2011 · Replies 17 · Apr 16, 2011

Replies: 17

Views: 5K

Graduate Charge Sphere Radiation & E Field: Griffiths Explained

Apr 16, 2011 · Replies 3 · Apr 16, 2011

Replies: 3

Views: 1K

Undergrad Charles' law and absolute zero

Apr 16, 2011 · Replies 2 · Apr 16, 2011

Replies: 2

Views: 5K

Graduate Classical Ideal Gas: Pathria's Insight on Non-Interacting Particles

Apr 9, 2011 · Replies 5 · Apr 16, 2011

Replies: 5

Views: 3K

High School Heat treatment of steel and the effect on it's hardness

Apr 14, 2011 · Replies 3 · Apr 15, 2011

Replies: 3

Views: 6K

High School Temperature loss - is it correct?

Apr 8, 2011 · Replies 2 · Apr 14, 2011

Replies: 2

Views: 1K

Graduate Enropy paradox ? or , tell me why?

Apr 4, 2011 · Replies 20 · Apr 13, 2011

Replies: 20

Views: 4K

Graduate Explaining Photon Entropy: G=<E>-TS+pV

Apr 11, 2011 · Replies 1 · Apr 12, 2011

Replies: 1

Views: 1K

Undergrad Kiln Building Q&A: Choosing the Right Element for 1500°C Heat

Apr 11, 2011 · Replies 1 · Apr 12, 2011

Replies: 1

Views: 2K

Undergrad Uncovering the Mechanics of Thrust in a Turbojet Engine

Apr 12, 2011 · Replies 2 · Apr 12, 2011

Replies: 2

Views: 3K

High School Start car engine with dry cell

Apr 11, 2011 · Replies 1 · Apr 11, 2011

Replies: 1

Views: 2K

Undergrad Why don't we heat homes using air conditioners?

Apr 7, 2011 · Replies 72 · Apr 11, 2011

3

Replies: 72

Views: 9K

Graduate Coarse Graining and the Second Law of Thermodynamics

Apr 11, 2011 · Replies 1 · Apr 11, 2011

Replies: 1

Views: 2K

Undergrad Will Two Thermometers in Water at 50 Celsius Have the Same Temperature?

Apr 11, 2011 · Replies 1 · Apr 11, 2011

Replies: 1

Views: 2K

Graduate Solving Isothermal Problem: Pressure vs. Volume

Apr 6, 2011 · Replies 15 · Apr 10, 2011

Replies: 15

Views: 4K

Undergrad What is so magical about the melting and boiling points?

Apr 9, 2011 · Replies 17 · Apr 10, 2011

Replies: 17

Views: 5K

Graduate Gibbs free energy partial derivative

Apr 10, 2011 · Replies 2 · Apr 10, 2011

Replies: 2

Views: 4K

Undergrad Entropy of a contained ideal gas mixture

Apr 9, 2011 · Replies 2 · Apr 9, 2011

Replies: 2

Views: 3K

High School Temperature and thermal equilibrium

Apr 9, 2011 · Replies 1 · Apr 9, 2011

Replies: 1

Views: 1K

Undergrad Calculating Heat Loss in a Home Heating System

Apr 8, 2011 · Replies 3 · Apr 8, 2011

Replies: 3

Views: 10K

Graduate Statistical definition of entropy

Apr 8, 2011 · Replies 1 · Apr 8, 2011

Replies: 1

Views: 2K

Graduate Understanding Quasi-Static Process: Work and Temperature Changes

Apr 5, 2011 · Replies 3 · Apr 6, 2011

Replies: 3

Views: 4K

Graduate Enthelpy change at constant volume?

Apr 6, 2011 · Replies 3 · Apr 6, 2011

Replies: 3

Views: 7K

Delhi Shower: Black or White Paint?

Apr 6, 2011 · Replies 2 · Apr 6, 2011

Replies: 2

Views: 2K

Graduate Solve Entropy vs Quality Problem

Jun 9, 2007 · Replies 8 · Apr 6, 2011

Replies: 8

Views: 7K

Undergrad Does entropy contradict the Big Bang theory?

Apr 4, 2011 · Replies 7 · Apr 5, 2011

Replies: 7

Views: 3K

Graduate Flow work and the first law of thermodynamics

Mar 20, 2011 · Replies 4 · Apr 5, 2011

Replies: 4

Views: 11K

Graduate Derivative of the partition function Help

Apr 3, 2011 · Replies 2 · Apr 4, 2011

Replies: 2

Views: 5K

High School Water Restrictor in Radiator Hose: Cool Down or Heat Up?

Apr 4, 2011 · Replies 4 · Apr 4, 2011

Replies: 4

Views: 2K

High School Does Unit Consistency Affect Calculations in the E = mcΔT Formula?

Apr 4, 2011 · Replies 1 · Apr 4, 2011

Replies: 1

Views: 20K

Graduate Explanation of why there can't be dipole gravitational radiation

Apr 4, 2007 · Replies 3 · Apr 4, 2011

Replies: 3

Views: 7K

Graduate Relation between entropy, order and structures

Apr 2, 2011 · Replies 7 · Apr 3, 2011

Replies: 7

Views: 10K

Graduate Help with Basic Concepts in Thermodynamics

Apr 2, 2011 · Replies 3 · Apr 2, 2011

Replies: 3

Views: 3K

Undergrad Carnot's cycle and a-like cycles

Apr 2, 2011 · Replies 2 · Apr 2, 2011

Replies: 2

Views: 2K

High School Understanding Stefan's Law for Students in Class 11

Jul 3, 2008 · Replies 5 · Apr 2, 2011

Replies: 5

Views: 22K

Graduate Isothermal Compressibility always positive proof

Apr 1, 2011 · Replies 4 · Apr 1, 2011

Replies: 4

Views: 11K

Graduate One can choose isothermal coordinates

Mar 31, 2011 · Replies 11 · Apr 1, 2011

Replies: 11

Views: 3K

Undergrad Entropy Change Associated with Work

Mar 30, 2011 · Replies 2 · Mar 31, 2011

Replies: 2

Views: 2K

Undergrad Relative humidity at negative temperature

Mar 30, 2011 · Replies 3 · Mar 31, 2011

Replies: 3

Views: 31K

Graduate What Causes High Heat Loss in Space?

Mar 30, 2011 · Replies 8 · Mar 30, 2011

Replies: 8

Views: 21K

Graduate Boltzmann Constant in definition of entropy

Mar 29, 2011 · Replies 3 · Mar 30, 2011

Replies: 3

Views: 3K

Undergrad Definition of a reversible process

Mar 28, 2011 · Replies 9 · Mar 30, 2011

Replies: 9

Views: 3K

Undergrad Heat production from low wear friction - efficiency

Mar 30, 2011 · Replies 5 · Mar 30, 2011

Replies: 5

Views: 4K

High School Heat from friction - the theory

Mar 30, 2011 · Replies 3 · Mar 30, 2011

Replies: 3

Views: 4K

Graduate Understanding the Role of Fundamental Temperature in Thermodynamics

Mar 29, 2011 · Replies 7 · Mar 29, 2011

Replies: 7

Views: 3K

High School Estimating Car Engine Temp. with Load: A Simplified Approach

Mar 28, 2011 · Replies 3 · Mar 28, 2011

Replies: 3

Views: 2K

Undergrad Can a Wired System Achieve 100% Efficiency?

Mar 25, 2011 · Replies 10 · Mar 28, 2011

Replies: 10

Views: 3K

Undergrad Internally Reversible and Isothermal Processes

Mar 27, 2011 · Replies 3 · Mar 28, 2011

Replies: 3

Views: 18K

Graduate Does the Carnot heat engine law apply to an internal combustion engine?

Mar 11, 2011 · Replies 21 · Mar 28, 2011

Replies: 21

Views: 17K

Undergrad Heat Exchange Between Air & Water: 1 Cubic Meter Each

Mar 27, 2011 · Replies 1 · Mar 27, 2011

Replies: 1

Views: 2K

Graduate Why Does Dipole Radiation Shift from Radial to Theta Hat Direction?

Mar 26, 2011 · Replies 4 · Mar 27, 2011

Replies: 4

Views: 3K

Graduate Confusion about entropy and disorder

Mar 12, 2011 · Replies 25 · Mar 26, 2011

Replies: 25

Views: 8K

Undergrad Examples of decreased entropy .

Mar 26, 2011 · Replies 4 · Mar 26, 2011

Replies: 4

Views: 37K

Undergrad Enthelpy Change of Ice to Vapor - Show on Graph w/BTU's

Mar 24, 2011 · Replies 1 · Mar 26, 2011

Replies: 1

Views: 2K

Graduate Closed systems and mass/energy transference

Mar 24, 2011 · Replies 1 · Mar 24, 2011

Replies: 1

Views: 3K

High School How fast does hot air rise and disperse?

Mar 23, 2011 · Replies 10 · Mar 24, 2011

Replies: 10

Views: 23K

Graduate Understanding Thermodynamics Concepts: Common Questions Answered - Test Prep

Mar 23, 2011 · Replies 2 · Mar 24, 2011

Replies: 2

Views: 3K

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