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Graduate How to validate a code written for solution of 1D diffusion?

  • Atr cheema
  • · Replies 5 ·
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5

High School What attribute makes some fluids more compressible than others?

  • thetexan
  • · Replies 11 ·
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11

Undergrad Infrared radiation from friction

  • Strange design
  • · Replies 5 ·
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5

Undergrad Amount of energy required to heat a kg of water?

  • tummbacoco
  • · Replies 6 ·
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6

Graduate Logarithm in entropy shows irreversibility of the Universe?

  • Tabasko633
  • · Replies 9 ·
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9

Graduate Carnot Cycle: Doubt in Reversible Isothermal Heat Addition

  • Rahul Mohan P
  • · Replies 5 ·
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5

High School Some calculations in Newton's Third Law

  • ahmed emad
  • · Replies 4 ·
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4

Undergrad Thermodynamics: The Jet Engine

  • TheBusFlyer
  • · Replies 3 ·
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3

Undergrad Heat Transfer in Water: Convection, Expansion & Conduction

  • Zaya Bell
  • · Replies 4 ·
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4

High School Calculating Perfect Bath Temperature: 100L Tub

  • Percy
  • · Replies 11 ·
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11

Undergrad How do PIR detectors react to plants?

  • sophiecentaur
  • · Replies 3 ·
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3

Graduate Thermodynamics -- Entropy of an Isometric Process

  • AnotherParadox
  • · Replies 7 ·
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7

Graduate Radiation Pressure and Conservation of Momentum

  • Samson4
  • · Replies 46 ·
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46

Undergrad Why do people ignore sweat dropping off as a cooling mechanism

  • jlyu002@ucr.e
  • · Replies 7 ·
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7

Undergrad Properties of refrigerant R410B

  • NING
  • · Replies 1 ·
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1

Graduate Gas diffusion through a semi permeable membrane

  • Zamw
  • · Replies 5 ·
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5

High School Uncovering the Preference for Certain Types of Energy

  • JLT
  • · Replies 4 ·
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4

High School Energy Requirement to Levitate 550 lb Mass at Sea Level

  • stevmg
  • · Replies 15 ·
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15

Graduate Second law of thermodynamics and absolute zero

  • i_hate_math
  • · Replies 1 ·
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1

Undergrad What is enthelpy for combustion of glucose?

  • i_hate_math
  • · Replies 3 ·
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3

Undergrad (thermo) how to calculate the temperature of a coal furnace (applied)

  • kyle111
  • · Replies 2 ·
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2

Undergrad Heating effects of different lightbulbs

  • f todd baker
  • · Replies 6 ·
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6

Graduate Temperature change (first law of thermodynamics)

  • jones123
  • · Replies 4 ·
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4

Graduate Do photons emitted by charged particles in a uniform loop get canceled out?

  • Pushoam
  • · Replies 5 ·
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5

Graduate Thanks in advance.Heat Transfer Modeling: Get Insight for Physical Intuition

  • JordanD
  • · Replies 10 ·
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10

Graduate Thermodynamics - isentropic, polytropic and compressibility

  • Friis
  • · Replies 1 ·
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1

High School Entropy: why measure disorder?

  • Robert Webb
  • · Replies 6 ·
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6

Undergrad How does evolution theory fit the entropy theory

  • Mathijsgri
  • · Replies 28 ·
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28

Undergrad What Is the Connection Between Exergy Heat and Losses?

  • PHstud
  • · Replies 1 ·
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1

Undergrad Liquid to gas expansion temperature change in a tank

  • PHstud
  • · Replies 3 ·
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3

Undergrad How does a pressure/temperature difference cause a force?

  • xTheLuckySe7en
  • · Replies 2 ·
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2

Undergrad Crazy steam-hydraulic unit design

  • Prizzard
  • · Replies 5 ·
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5

Graduate Heat Diffusion in 3D: Almost Spherical Flow

  • hunt_mat
  • · Replies 8 ·
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8

High School Why do we have Newton's first law

  • Quantum Velocity
  • · Replies 11 ·
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11

Graduate Question about entropy, particles

  • Oriononthehorizon
  • · Replies 3 ·
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3

Undergrad Does Building Construction Defy the Second Law of Thermodynamics?

  • shihab-kol
  • · Replies 10 ·
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10

Undergrad Entropy change when the number of particles decreases

  • greypilgrim
  • · Replies 1 ·
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1

Graduate Negative heat capacity and thermal reservoir

  • Afonso Campos
  • · Replies 3 ·
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3

Undergrad Can i use a neon lamp as radiation detctor?

  • patric44
  • · Replies 6 ·
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6

Graduate Proof of fundamental thermodynamics equation for open systems

  • PHstud
  • · Replies 3 ·
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3

Graduate Negative T for a spin 1 system in the canonical ensemble

  • Gabriel Maia
  • · Replies 1 ·
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1

Undergrad Temperature Conversions: Understanding the Use of Conversion Factors for Rates

  • transmini
  • · Replies 7 ·
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7

Undergrad Why Doesn't Decreasing Volume Increase Molecular Speed According to Boyle's Law?

  • Kajan thana
  • · Replies 1 ·
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1

Graduate Classical statistical physics -- Number of microstates

  • LagrangeEuler
  • · Replies 3 ·
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3

Graduate Why is Qir < than Qr? Carnot cycle and change in G

  • Abhishek Jain
  • · Replies 34 ·
2
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34

Graduate Can Light Directly Heat Materials Through Phonon Absorption?

  • Electric to be
  • · Replies 4 ·
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4

Undergrad Why Are Refrigerators More Complex Than Stoves?

  • TreyBien
  • · Replies 42 ·
2
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42

Graduate Maximum work done in a Carnot Cycle

  • BrianSauce
  • · Replies 6 ·
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6

Undergrad Air quantity to blow up a tyre

  • Andrea Vironda
  • · Replies 8 ·
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8

Graduate Naive Doubt About Thermodynamic Equilibrium

  • modulus
  • · Replies 10 ·
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10

Graduate Does efficiency always depend on reversibility of the engine?

  • Soren4
  • · Replies 33 ·
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33

High School The Arrow Of Time As Defined By The Forces

  • Not A Physicist
  • · Replies 6 ·
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6

Graduate Pressure and temperature of expanding humid air

  • Anachronist
  • · Replies 8 ·
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8

Undergrad Why Does an Expanding Gas Cool Down?

  • aochider
  • · Replies 42 ·
2
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42

Undergrad Fuel with Static Air in a Jet engine

  • TheBusFlyer
  • · Replies 1 ·
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1

Graduate Why we use enthelpy when we calculate latent heat?

  • seungwoo Park
  • · Replies 1 ·
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1

Undergrad Forced convection over a cylinder

  • gasperz
  • · Replies 1 ·
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1

Graduate Doubts Arising from Clausius' Inequality and the Second Law

  • modulus
  • · Replies 6 ·
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6

High School The Mystery of Rising Temperatures When Heating is Turned Off

  • Wasif Shah
  • · Replies 5 ·
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5

High School Does temperature change with depth in a fluid?

  • Cheesycheese213
  • · Replies 4 ·
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4

Graduate Thermodynamics. Partial derivative tricks.

  • LagrangeEuler
  • · Replies 4 ·
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4

Undergrad Why Do Authors Use γ=γ(P,T) Instead of γ=γ(P,T,V) in Thermodynamics?

  • LagrangeEuler
  • · Replies 4 ·
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4

Undergrad Are 55% Efficient Peltier Coolers Using Vacuum Technology Real?

  • christian everett
  • · Replies 2 ·
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2

Graduate Alternate Heat Expansion Media for Nuclear Power Plants

  • christian everett
  • · Replies 1 ·
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1

Graduate Thermodynamics of a cannon ball / musket ball shot bullet

  • darkdave3000
  • · Replies 29 ·
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29

Undergrad Thermodynamic cycle of a solar cell

  • whitejac
  • · Replies 1 ·
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1

Graduate Cooling a gas by releasing it into vacuum: Entropy?

  • greypilgrim
  • · Replies 5 ·
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5

Graduate How Does Acoustic Radiation Force Affect Particle Movement in Ultrasonic Waves?

  • wt1987
  • · Replies 1 ·
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1

Undergrad Confusion regarding the First Law of Thermodynamics

  • Smith
  • · Replies 4 ·
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4

Undergrad Why does stretching a rubber band increase its temperature?

  • dsanz
  • · Replies 2 ·
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2

Graduate Heat capacity at constant volume and density

  • Silviu
  • · Replies 1 ·
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1

High School Blackbody Definition: Absorbs All Light & Emits Thermal Radiation

  • Silviu
  • · Replies 11 ·
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11

High School Reversible Processes Explained: Entropy, Time, & More

  • Silviu
  • · Replies 4 ·
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4

High School Heat: Cause or Effect of Vibrating Atoms?

  • BL4CKB0X97
  • · Replies 2 ·
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2

Graduate Conservation of entropy -- adiabatic process

  • AlexS
  • · Replies 1 ·
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1

Graduate Specific Exergy vs Specific Flow Exergy

  • Suvat99
  • · Replies 2 ·
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2

Graduate How to calculate heat dispersion through a solid copper rod?

  • Jim Smith
  • · Replies 2 ·
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2

Graduate Induction Heating: Calculating Magnetic Field from Temperature

  • Ruturaj Vaidya
  • · Replies 2 ·
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2

Undergrad Most efficient temperature to evaporate water?

  • mcharbs55
  • · Replies 20 ·
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20

High School Has thermal conductivity any relationship with energy?

  • Noduagga
  • · Replies 2 ·
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2

Graduate Classical gas with general dispersion relation

  • victor94
  • · Replies 1 ·
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1

Undergrad Understanding Reversible Fluid Flow and Its Relationship to Reynolds Number

  • member 428835
  • · Replies 9 ·
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9

Undergrad A question about dehumidifiers and condensation

  • YoshiBeans
  • · Replies 5 ·
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5

Undergrad Adiabatic Process: Solving a Thermodynamics Problem

  • RingNebula57
  • · Replies 14 ·
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14

Graduate Question about Maximum Entropy

  • voxmagnetar
  • · Replies 4 ·
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4

Graduate How can thermal fluctuations decrease entropy?

  • Rodrigo Olivera
  • · Replies 1 ·
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1

Undergrad Stirling engine against solar panels

  • Jarro
  • · Replies 2 ·
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2

High School Why Do Different Materials Glow When Heated?

  • Anis SNOUSSI
  • · Replies 6 ·
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6

Undergrad Is a quasi-static but irreversible process possible?

  • goodphy
  • · Replies 5 ·
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5

Undergrad Thermodynamic Entity: What Is It?

  • Thejas15101998
  • · Replies 2 ·
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2

Undergrad Error in this depiction of a Stirling engine?

  • greypilgrim
  • · Replies 1 ·
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1

Undergrad Method for determining the latent heat of oils

  • purpleBlob
  • · Replies 1 ·
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1

Undergrad Why does formation of snow flakes not violate entropy law?

  • low inhibition
  • · Replies 7 ·
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7

Graduate Proving Carnot efficiency is maximum and conditions

  • C_Pu
  • · Replies 1 ·
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1

Graduate Clarifying Entropy: Does it Always Increase?

  • Jeronimus
  • · Replies 12 ·
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12

Undergrad Introducing two identical containers with different gasses

  • wasup23
  • · Replies 3 ·
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3

High School Maximum efficiency of a dehumidifier

  • SlowThinker
  • · Replies 2 ·
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2

Undergrad Heat injection and work during Rankine cycle

  • GwtBc
  • · Replies 3 ·
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3

Undergrad Heat conduction between 2 objects

  • fahraynk
  • · Replies 2 ·
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2

High School How Can You Maximize the Efficiency of a Venturi Vacuum Pump?

  • William Burleson
  • · Replies 1 ·
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1