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Graduate What exactly happens when entropy reaches its maximum value in the universe?

Mar 1, 2009 · Replies 4 · Apr 9, 2009

Replies: 4

Views: 4K

Undergrad Cool Gas with Ionisation - Can High Voltage Do It?

Apr 6, 2009 · Replies 10 · Apr 9, 2009

Replies: 10

Views: 3K

High School The intensity of the Sun and heat on Earth

Apr 8, 2009 · Replies 5 · Apr 9, 2009

Replies: 5

Views: 2K

Undergrad Specific Heat vs Thermal Conductivity

Apr 8, 2009 · Replies 3 · Apr 9, 2009

Replies: 3

Views: 15K

Graduate Second law of Thermodynamics - does this violate it?

Apr 7, 2009 · Replies 9 · Apr 9, 2009

Replies: 9

Views: 4K

Undergrad What Does Non-Interact Mean in the Context of Ideal Gases?

Apr 8, 2009 · Replies 9 · Apr 8, 2009

Replies: 9

Views: 3K

Undergrad Heat conductivity depending on temperature

Apr 7, 2009 · Replies 1 · Apr 7, 2009

Replies: 1

Views: 3K

Undergrad Thermal Radiation and Heat Engines

Apr 6, 2009 · Replies 2 · Apr 7, 2009

Replies: 2

Views: 2K

Graduate Electirc Field Amplitude Radiation Pattern?

Apr 7, 2009 · Replies 7 · Apr 7, 2009

Replies: 7

Views: 3K

High School Nuclear reactor there is radiation called like sarencobe radiation

Apr 3, 2009 · Replies 15 · Apr 6, 2009

Replies: 15

Views: 2K

Undergrad What Is Adiabatic Change and How Does It Relate to the Laplacian?

Apr 2, 2009 · Replies 2 · Apr 5, 2009

Replies: 2

Views: 3K

Graduate Understand Kelvin-Plank Statement for 2nd Law of Thermodynamics

Apr 4, 2009 · Replies 12 · Apr 5, 2009

Replies: 12

Views: 4K

Graduate An Impossibly Enormous Calculation

May 17, 2008 · Replies 23 · Apr 4, 2009

Replies: 23

Views: 5K

Undergrad EM Radiation from Power Transformers

Apr 4, 2009 · Replies 2 · Apr 4, 2009

Replies: 2

Views: 13K

Undergrad How Does Specific Heat Affect Heat Transfer Rates in Different Metals?

Apr 3, 2009 · Replies 3 · Apr 3, 2009

Replies: 3

Views: 4K

High School Why have a minimum temperature

Mar 31, 2009 · Replies 6 · Apr 3, 2009

Replies: 6

Views: 2K

Graduate What is the current status of Tsallis entropy in entropy modeling?

Apr 2, 2009 · Replies 2 · Apr 2, 2009

Replies: 2

Views: 2K

Undergrad How Can I Calculate Hot Water Usage in My Home?

Mar 31, 2009 · Replies 2 · Apr 1, 2009

Replies: 2

Views: 3K

Undergrad Can fire be considered the fourth state of matter?

Mar 27, 2009 · Replies 10 · Mar 31, 2009

Replies: 10

Views: 9K

High School Are Convection and Conduction the Same Form of Heat Transfer?

Mar 17, 2009 · Replies 13 · Mar 28, 2009

Replies: 13

Views: 3K

Graduate Harnessing Neutrinos for Energy: Possibilities and Limitations

Mar 25, 2009 · Replies 11 · Mar 27, 2009

Replies: 11

Views: 9K

Undergrad Are Atomic Clocks Affected by Ambient Temperature?

Mar 27, 2009 · Replies 1 · Mar 27, 2009

Replies: 1

Views: 3K

Graduate What is order parameter and how to find critical temperature?

Mar 27, 2009 · Replies 2 · Mar 27, 2009

Replies: 2

Views: 16K

High School Internal Energy - Is there a maximum value?

Mar 23, 2009 · Replies 8 · Mar 26, 2009

Replies: 8

Views: 4K

Undergrad Ice vs. Dry Ice total BTU cooling to 25 degrees C

Mar 26, 2009 · Replies 1 · Mar 26, 2009

Replies: 1

Views: 5K

Undergrad What does temperature in mesosphere mean?

Mar 24, 2009 · Replies 8 · Mar 25, 2009

Replies: 8

Views: 3K

Graduate Modelling of condensation in air

Mar 22, 2009 · Replies 2 · Mar 25, 2009

Replies: 2

Views: 2K

Graduate Calculating enthelpy from other data

Mar 18, 2009 · Replies 23 · Mar 24, 2009

Replies: 23

Views: 17K

Graduate Entropy change and origin of life

Mar 22, 2009 · Replies 17 · Mar 23, 2009

Replies: 17

Views: 5K

Undergrad How to determine the time it takes for metals to reach a temp

Mar 23, 2009 · Replies 4 · Mar 23, 2009

Replies: 4

Views: 3K

Undergrad Thermo cyphon to drive barbeque spit?

Mar 20, 2009 · Replies 2 · Mar 22, 2009

Replies: 2

Views: 2K

Graduate Cooling heated gas under pressure with water

Mar 20, 2009 · Replies 3 · Mar 20, 2009

Replies: 3

Views: 4K

Graduate What is the mechanism behind transition radiation?

Mar 7, 2009 · Replies 14 · Mar 19, 2009

Replies: 14

Views: 4K

Graduate Temperature and Average Kinetic Energy

Mar 17, 2009 · Replies 4 · Mar 19, 2009

Replies: 4

Views: 9K

Graduate Understanding Plank's Law of Black Body Radiation

Mar 19, 2009 · Replies 2 · Mar 19, 2009

Replies: 2

Views: 2K

Undergrad Netwons Third Law Explained: Equal Force with Unequal Masses

Mar 16, 2009 · Replies 2 · Mar 16, 2009

Replies: 2

Views: 2K

Undergrad Question about heating something under constant pressure/volume

Mar 16, 2009 · Replies 2 · Mar 16, 2009

Replies: 2

Views: 2K

Undergrad Fundamental doubt in Thermodynamics

Mar 15, 2009 · Replies 10 · Mar 16, 2009

Replies: 10

Views: 3K

Graduate Questionning the secong law of thermodynamics

Mar 15, 2009 · Replies 3 · Mar 15, 2009

Replies: 3

Views: 2K

Undergrad Is Hot Air from Freezers/Fridges Causing Failures?

Mar 15, 2009 · Replies 1 · Mar 15, 2009

Replies: 1

Views: 1K

Graduate Relation between heat capacity and internal energy

Mar 13, 2009 · Replies 5 · Mar 14, 2009

Replies: 5

Views: 7K

Graduate Why Matter Can't Spontaneously Turn to Energy

Mar 11, 2009 · Replies 8 · Mar 12, 2009

Replies: 8

Views: 3K

High School Where can I learn to calculate the need for cooling?

Mar 10, 2009 · Replies 5 · Mar 12, 2009

Replies: 5

Views: 3K

High School Heat Energy Required: Calculate Q, C, ΔT

Mar 11, 2009 · Replies 2 · Mar 11, 2009

Replies: 2

Views: 6K

Undergrad What Is Absolute Zero & Maximum Temperature?

Mar 7, 2009 · Replies 8 · Mar 10, 2009

Replies: 8

Views: 3K

Graduate Netwons second law and rocket equation

Mar 9, 2009 · Replies 4 · Mar 9, 2009

Replies: 4

Views: 3K

Graduate Adiabatic/Reversible application of external field to Ideal Gas

Mar 7, 2009 · Replies 1 · Mar 7, 2009

Replies: 1

Views: 3K

Graduate Adiabatic Process: Cv (Molar Heat)

Mar 4, 2009 · Replies 2 · Mar 7, 2009

Replies: 2

Views: 2K

Graduate Radiative Energy: Debate on Physical Processes

Mar 3, 2009 · Replies 7 · Mar 7, 2009

Replies: 7

Views: 5K

Undergrad Physical properties of High-temperature reusable surface insulation tiles

Mar 6, 2009 · Replies 2 · Mar 6, 2009

Replies: 2

Views: 4K

High School A question about heating aluminium with a hole in it

Mar 5, 2009 · Replies 4 · Mar 5, 2009

Replies: 4

Views: 11K

High School What is the Latent Heat of Fusion and Why Does it Take Heat to Freeze Something?

Mar 5, 2009 · Replies 1 · Mar 5, 2009

Replies: 1

Views: 9K

Graduate How Does Cooling Matter to Absolute Zero Relate to Energy Release?

Mar 2, 2009 · Replies 14 · Mar 4, 2009

Replies: 14

Views: 3K

High School Experiment for specific latent heat of fusion of ice

Aug 30, 2008 · Replies 3 · Mar 4, 2009

Replies: 3

Views: 24K

Graduate A Thermometer That Could Measure Negative Temperature

Mar 1, 2009 · Replies 7 · Mar 4, 2009

Replies: 7

Views: 10K

Graduate Temperature: Absolute infinity

Jun 1, 2008 · Replies 7 · Mar 3, 2009

Replies: 7

Views: 4K

Undergrad Optimizing Heat Transfer: The Benefits of Coiled Pipes

May 8, 2008 · Replies 11 · Mar 2, 2009

Replies: 11

Views: 3K

Graduate Study Kinetic Theory: Deriving Boltzmann Equation from Liouville

Feb 28, 2009 · Replies 1 · Mar 2, 2009

Replies: 1

Views: 3K

High School If my rocket has two rocket engines going off each at an impulse at 20.00 N/S .

Mar 2, 2009 · Replies 3 · Mar 2, 2009

Replies: 3

Views: 3K

High School Where Does the Sun's Energy Go?

Mar 1, 2009 · Replies 2 · Mar 2, 2009

Replies: 2

Views: 2K

Undergrad Partial derivatives in thermodynamics

Mar 1, 2009 · Replies 2 · Mar 1, 2009

Replies: 2

Views: 3K

Undergrad Understanding the Function of a Constant Volume Thermometer

Feb 28, 2009 · Replies 6 · Mar 1, 2009

Replies: 6

Views: 8K

High School What is the definition of energy?

Nov 27, 2008 · Replies 23 · Feb 28, 2009

Replies: 23

Views: 6K

Undergrad What is the significance of deriving PV=K?

Feb 27, 2009 · Replies 2 · Feb 28, 2009

Replies: 2

Views: 4K

Undergrad What gas's temperature increases as it decompresses?

Feb 19, 2009 · Replies 7 · Feb 26, 2009

Replies: 7

Views: 5K

Undergrad Checking understanding on factors affecting thermal equilibrium

Feb 25, 2009 · Replies 2 · Feb 25, 2009

Replies: 2

Views: 5K

High School Melting Ice: Does Water Surface Rise?

Feb 25, 2009 · Replies 1 · Feb 25, 2009

Replies: 1

Views: 2K

Graduate Entropy-Volume Changes in a Closed System: Examining Heat and Work Effects

Feb 19, 2009 · Replies 7 · Feb 21, 2009

Replies: 7

Views: 4K

Undergrad Temperature converter to freguancy

Feb 20, 2009 · Replies 2 · Feb 20, 2009

Replies: 2

Views: 2K

Undergrad Is pressure distinct from temperature in gas laws?

Feb 19, 2009 · Replies 6 · Feb 19, 2009

Replies: 6

Views: 3K

High School Does it Take More Energy to Produce a 9 Volt Battery?

Feb 17, 2009 · Replies 12 · Feb 18, 2009

Replies: 12

Views: 3K

Graduate Time constant for Liquid to Gas flashing off.

Feb 17, 2009 · Replies 1 · Feb 17, 2009

Replies: 1

Views: 4K

Undergrad [Thermodynamics] Ideal Gas Properties of Air

Dec 29, 2008 · Replies 4 · Feb 17, 2009

Replies: 4

Views: 12K

Undergrad Figuring out a stove top temperature using boiling water

Feb 15, 2009 · Replies 2 · Feb 15, 2009

Replies: 2

Views: 24K

High School How much does air expand with heat

Oct 27, 2008 · Replies 17 · Feb 14, 2009

Replies: 17

Views: 71K

Graduate Determining Thermal Coefficient of Binary Solvent Mixture

Feb 10, 2009 · Replies 3 · Feb 12, 2009

Replies: 3

Views: 3K

High School Do We Radiate Heat in Closed Rooms?

Jul 15, 2007 · Replies 25 · Feb 12, 2009

Replies: 25

Views: 19K

Undergrad Lasers increasing vapor to superheated steam

Feb 11, 2009 · Replies 1 · Feb 11, 2009

Replies: 1

Views: 2K

Undergrad A .5 kg rock is dropped from a height of 20 meters into a pail

Feb 10, 2009 · Replies 5 · Feb 11, 2009

Replies: 5

Views: 3K

Undergrad Thermal conductivity of the wetsuit

Feb 10, 2009 · Replies 3 · Feb 11, 2009

Replies: 3

Views: 4K

Undergrad How Can the Temperature of Heat Energy from Water Formation Be Measured?

Feb 10, 2009 · Replies 1 · Feb 10, 2009

Replies: 1

Views: 2K

High School What Happens to Forces When You Kick a Ball?

Feb 7, 2009 · Replies 4 · Feb 10, 2009

Replies: 4

Views: 2K

Undergrad Helicopter in a box: Third law

Feb 9, 2009 · Replies 3 · Feb 10, 2009

Replies: 3

Views: 5K

Undergrad Calculating heat from H2 and O2

Feb 9, 2009 · Replies 5 · Feb 10, 2009

Replies: 5

Views: 6K

Undergrad Calculate Jet Engine Net Thrust (F(N))

Feb 7, 2009 · Replies 5 · Feb 8, 2009

Replies: 5

Views: 10K

Undergrad Question concerning Ideal Gas Law correction to a teacher & tactons

Feb 6, 2009 · Replies 6 · Feb 8, 2009

Replies: 6

Views: 3K

Graduate Thermal equilibrium versus pressures

Feb 7, 2009 · Replies 3 · Feb 7, 2009

Replies: 3

Views: 2K

Graduate Vacuum Expansion: Understanding the Final States of Closed Systems

Feb 5, 2009 · Replies 2 · Feb 5, 2009

Replies: 2

Views: 5K

Undergrad Why is the internal energy unchanged in this closed system?

Feb 1, 2009 · Replies 19 · Feb 4, 2009

Replies: 19

Views: 5K

Undergrad Specific heat capacity at constant pressure

Feb 4, 2009 · Replies 1 · Feb 4, 2009

Replies: 1

Views: 19K

Graduate Is Hydrogen Gas Transparent to Gamma Rays? And What About Xenon Gas?

Feb 2, 2009 · Replies 2 · Feb 4, 2009

Replies: 2

Views: 3K

Undergrad Proving Specific Enthelpy = Specific Internal Energy

Feb 4, 2009 · Replies 1 · Feb 4, 2009

Replies: 1

Views: 5K

Graduate The rate of evaporation at high temperatures

Feb 3, 2009 · Replies 2 · Feb 4, 2009

Replies: 2

Views: 6K

High School Effect of a Vacuum on Liquid Boiling Point

Feb 2, 2009 · Replies 1 · Feb 2, 2009

Replies: 1

Views: 2K

Undergrad Gravity creates energy Violation of the first law of thermodynamics?

Jan 28, 2009 · Replies 9 · Jan 31, 2009

Replies: 9

Views: 5K

Undergrad Heat loss through an open door

Jan 23, 2009 · Replies 3 · Jan 31, 2009

Replies: 3

Views: 30K

Graduate Thermo: how should enthelpy change during cooling/heating?

Jan 28, 2009 · Replies 8 · Jan 29, 2009

Replies: 8

Views: 7K

Undergrad Active IR vs. Passive Thermal Imaging

Jan 28, 2009 · Replies 3 · Jan 29, 2009

Replies: 3

Views: 16K

Undergrad Combining Differently-Tempered Gases: Calculating Internal Energy Change

Jan 29, 2009 · Replies 3 · Jan 29, 2009

Replies: 3

Views: 3K

Undergrad Variation of liquid density with temperature

Jan 28, 2009 · Replies 4 · Jan 29, 2009

Replies: 4

Views: 11K

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