Physics - Q&A

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Are there areas in the observable universe which surely cannot support life as we know them?

1 answer · posted 1d ago by JohnDoea‭ · last activity 20h ago by Olin Lathrop‭

terminology

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Clear up confusion on Minkowski signature

1 answer · posted 1d ago by Istiak‭ · last activity 24h ago by celtschk‭

special-relativity minkowski-metric coordinate-systems metric-tensor

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Why did my roller luggage's wheels stop turning smoothly?

0 answers · posted 23d ago by VLDR‭ · last activity 1d ago by Istiak‭

motion friction

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What is virtual work?

1 answer · posted 4mo ago by Istiak‭ · last activity 4d ago by Istiak‭

classical-mechanics forces virtual-work

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What does Laplace operator represent?

1 answer · posted 1mo ago by Istiak‭ · last activity 4d ago by Istiak‭

laplace

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What is $\mathcal{O}$ in integration of potential?

1 answer · posted 4d ago by Istiak‭ · last activity 4d ago by Istiak‭

electromagnetism potential-energy potential

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Calculate Center of Thrust

1 answer · posted 26d ago by Josh Hyatt‭ · last activity 25d ago by Olin Lathrop‭

force

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What is "order" and "disorder" in entropy?

2 answers · posted 2mo ago by Istiak‭ · last activity 1mo ago by Derek Elkins‭

thermodynamics entropy

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Should I always write units in equation no matter if it looks like variable?

2 answers · posted 2mo ago by Istiak‭ · last activity 2mo ago by Canina‭

units

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What is Ether theory? (I think the book I read is misinterpreting Ether)

2 answers · posted 2mo ago by A person who doesn't know anything‭ · edited 2mo ago by A person who doesn't know anything‭

special-relativity relativity revolution aether

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Is it possible to derive the Dieterici equation starting from assumptions about microstates?

0 answers · posted 2mo ago by HDE 226868‭

statistical-mechanics thermodynamics gases

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Where did the measuring systems (metric & imperial) originate and how? [closed]

0 answers · posted 4mo ago by IDoYTSoSubHaha‭ · closed 2mo ago by Mithical‭

measurement metric-system imperial-system

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What is Apsidal Vector?

0 answers · posted 2mo ago by Istiak‭

apsidal vectors

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Must calendars be based on solar systems?

3 answers · posted 3mo ago by JohnDoea‭ · last activity 3mo ago by MissMulan‭

time

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Book suggestion for Classical Mechanics

1 answer · posted 4mo ago by Istiak‭ · last activity 3mo ago by Istiak‭

classical-mechanics book-suggestion

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What's the importance of Poisson brackets?

0 answers · posted 3mo ago by Istiak‭ · edited 3mo ago by Istiak‭

hamilton-dynamics hamilton-formalism poisson-brackets

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What is semiholonomic?

1 answer · posted 3mo ago by Istiak‭ · last activity 3mo ago by HDE 226868‭

semi-holonomic

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What does Lagrangian actually represent?

2 answers · posted 4mo ago by Istiak‭ · last activity 3mo ago by Istiak‭

lagrangian-formalism

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Superconductivity

0 answers · posted 3mo ago by MissMulan‭

solid-state superconductivity

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Prove differential form of Lagrangian

1 answer · posted 4mo ago by Istiak‭ · last activity 4mo ago by celtschk‭

lagrangian-formalism

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If planet 9 exists, is it correct to say that it is a "dark planet"?

2 answers · posted 8mo ago by JohnDoea‭ · last activity 4mo ago by HDE 226868‭

our-solar-system planet-9

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What happens if an electron collides with another electron?

0 answers · posted 4mo ago by Istiak‭

electrodynamics atoms electrons protons

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What happens if an electron collides with a proton?

2 answers · posted 4mo ago by Istiak‭ · edited 4mo ago by Istiak‭

electrodynamics atoms electrons protons

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Find jerk of time varying force

1 answer · posted 4mo ago by MissMulan‭ · last activity 4mo ago by Mithrandir24601‭

newtonian-mechanics potential-energy acceleration

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Natural ways to acquire gravity for a colony on earth's moon

2 answers · posted 6mo ago by JohnDoea‭ · last activity 4mo ago by Canina‭

Moon Gravity

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Why we can't find a particle accelerating unless there's some other particle accelerating somewhere else?

3 answers · posted 4mo ago by Istiak‭ · last activity 4mo ago by Olin Lathrop‭

classical-mechanics force

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Find position of a particle at a time

1 answer · posted 4mo ago by MissMulan‭ · last activity 4mo ago by celtschk‭

time newtonian-mechanics forces

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Signal modeling as only digital, only analogue, or as both

3 answers · posted 4mo ago by JohnDoea‭ · last activity 4mo ago by Lundin‭

signal-processing

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Motion of charged particle inside a magnetic field

0 answers · posted 4mo ago by MissMulan‭ · edited 4mo ago by MissMulan‭

classical-mechanics electrodynamics electromagnetism lorentz

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What is the meaning that the universe is flat?

2 answers · posted 4mo ago by JohnDoea‭ · last activity 4mo ago by celtschk‭

universe

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How dangerous is mounting and firing a gun on another human's body part? [closed]

1 answer · posted 9mo ago by VLDR‭ · closed 4mo ago by Mithical‭

classical-mechanics

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Magnetic charges to solve interaction between 2 magnetic dipoles

1 answer · posted 5mo ago by MissMulan‭ · last activity 5mo ago by Olin Lathrop‭

electrostatics

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How can I turn a floor lamp, that lights upward, into a reading light? [closed]

0 answers · posted 11mo ago by VLDR‭ · edited 5mo ago by VLDR‭

light

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What is inflation in cosmology?

2 answers · posted 8mo ago by JohnDoea‭ · last activity 5mo ago by Istiak‭

inflation cosmology

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Should Earth's moon colonies being deep underground ensure natural heating?

1 answer · posted 6mo ago by JohnDoea‭ · last activity 6mo ago by Dave Tweed‭

Moon

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decibel level of human hearing(human-auditory-range)

1 answer · posted 7mo ago by Istiak‭ · last activity 7mo ago by Olin Lathrop‭

decibel sound wave

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Interaction terms in Srednicki's proof of spin-statistics theorem

1 answer · posted 8mo ago by Ezekiel‭ · last activity 7mo ago by Mithrandir24601‭

quantum-field-theory spin-statistics

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Is it rational to freeze water bottles during colder nights, and place them in front of a fan during warmer days?

1 answer · posted 8mo ago by VLDR‭ · last activity 8mo ago by manassehkatz‭

classical-mechanics

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Does folding glasses increase the probability of separating at the hinge?

1 answer · posted 8mo ago by VLDR‭ · last activity 8mo ago by Olin Lathrop‭

lenses

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Why should there not be water below 6kms in the Earths crust?

0 answers · posted 8mo ago by Conrado‭ · edited 8mo ago by Conrado‭

pressure

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For cleaning food and objects, power scrubber vs. Electric rotary toothbrush? [closed]

0 answers · posted 9mo ago by VLDR‭ · closed 9mo ago by Mithrandir24601‭

pressure

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Applying Young-Laplace equation on meniscus formed due to rise of liquid on a single plate

0 answers · posted 9mo ago by TripleFault‭

pressure young-laplace

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Why would a 1.74 index lens be more prone to chip and be less resilient than 1.67?

1 answer · posted 10mo ago by VLDR‭ · last activity 10mo ago by Olin Lathrop‭

lenses

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Explain like I'm 5 – After glancing at a clock, why does the first second sometimes feel longer than the rest? [closed]

0 answers · posted 10mo ago by VLDR‭ · closed 10mo ago by Mithrandir24601‭

time

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Would we need Alternating Current if superconducting wires existed?

2 answers · posted 10mo ago by theabbie‭ · last activity 10mo ago by celtschk‭

superconductor alternating-current

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How do constraints work in Lagrangian systems?

1 answer · posted 10mo ago by Ezekiel‭ · last activity 10mo ago by Derek Elkins‭

classical-mechanics lagrangian-formalism constrained-dynamics differential-geometry

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How does probability conservation work in Dirac's original formulation of relativistic QM?

1 answer · posted 11mo ago by Ezekiel‭ · last activity 11mo ago by Derek Elkins‭

special-relativity quantum-mechanics hilbert-space dirac-equation normalization

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Unusual way to write spacetime coordinates/metric: Is there any downside?

1 answer · posted 11mo ago by celtschk‭ · last activity 11mo ago by dmckee‭

special-relativity

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