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General Q&A about physics of any type and at any level

57 posts · Subscribe

Activity Age Score Random

22%

+0 −5

Are lamps, with blistering light bulbs exposed and facing down on the user, dangersome?

2 answers · posted 1mo ago by VLDR‭ · last activity 29d ago by celtschk‭

light

71%

+3 −0

Why series springs behave like parallel? A comparison between parallel resistance and series spring.

1 answer · posted 4d ago by Anonymous‭ · last activity 4d ago by Olin Lathrop‭

classical-mechanics springs resistance

60%

+1 −0

What's the equation of kinetic energy of charged particle?

0 answers · posted 29d ago by Anonymous‭

kinetic-energy lagrangian particles

50%

+0 −0

May it be that there are more than 8/9 planets in our solar system?

0 answers · posted 5h ago by JohnDoea‭ · edited 5h ago by JohnDoea‭

planet

60%

+1 −0

Find position of a particle at a time

1 answer · posted 5mo ago by MissMulan‭ · last activity 5mo ago by celtschk‭

time newtonian-mechanics forces

33%

+2 −6

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

0 answers · posted 2mo ago by VLDR‭ · last activity 1mo ago by Anonymous‭

motion friction

60%

+1 −0

What's the importance of Poisson brackets?

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

hamilton-dynamics hamilton-formalism poisson-brackets

71%

+3 −0

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

2 answers · posted 3mo ago by Anonymous‭ · last activity 3mo ago by Derek Elkins‭

thermodynamics entropy

60%

+1 −0

Clear up confusion on Minkowski signature

1 answer · posted 1mo ago by Anonymous‭ · edited 1mo ago by Anonymous‭

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

60%

+1 −0

What happens if an electron collides with another electron?

0 answers · posted 5mo ago by Anonymous‭

electrodynamics atoms electrons protons

66%

+2 −0

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

1 answer · posted 7mo ago by JohnDoea‭ · last activity 7mo ago by Dave Tweed‭

Moon

50%

+0 −0

How electric displacement is proportional to surface charge?

1 answer · posted 24d ago by Anonymous‭ · last activity 15d ago by Anonymous‭

electrostatics charge conductor gauss-law dielectric

40%

+0 −1

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

2 answers · posted 9mo ago by JohnDoea‭ · last activity 5mo ago by HDE 226868‭

our-solar-system planet-9

77%

+5 −0

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

2 answers · posted 4mo ago by Anonymous‭ · last activity 4mo ago by Canina‭

units

75%

+4 −0

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

0 answers · posted 4mo ago by HDE 226868‭

statistical-mechanics thermodynamics gases

60%

+1 −0

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

3 answers · posted 5mo ago by JohnDoea‭ · last activity 5mo ago by Lundin‭

signal-processing

50%

+0 −0

Prove differential form of Lagrangian

1 answer · posted 5mo ago by Anonymous‭ · last activity 5mo ago by celtschk‭

lagrangian-formalism

71%

+3 −0

How can the kinetic energy equation be intuitively understood?

3 answers · posted 1mo ago by gmcgath‭ · last activity 1mo ago by celtschk‭

classical-mechanics energy

66%

+2 −0

Motion of charged particle inside a magnetic field

0 answers · posted 6mo ago by MissMulan‭ · edited 5mo ago by MissMulan‭

classical-mechanics electrodynamics electromagnetism lorentz

50%

+0 −0

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

0 answers · posted 6mo ago by IDoYTSoSubHaha‭ · closed 4mo ago by Mithical‭

measurement metric-system imperial-system

50%

+0 −0

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

1 answer · posted 1mo ago by Anonymous‭ · last activity 1mo ago by Anonymous‭

electromagnetism potential-energy potential

42%

+1 −2

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

1 answer · posted 1mo ago by JohnDoea‭ · last activity 1mo ago by Olin Lathrop‭

terminology

60%

+4 −2

Would we need Alternating Current if superconducting wires existed?

2 answers · posted 11mo ago by theabbie‭ · last activity 11mo ago by celtschk‭

superconductor alternating-current

40%

+0 −1

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

1 answer · posted 9mo ago by VLDR‭ · last activity 9mo ago by manassehkatz‭

classical-mechanics

62%

+3 −1

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

0 answers · posted 10mo ago by Conrado‭ · edited 10mo ago by Conrado‭

pressure

66%

+2 −0

What is semiholonomic?

1 answer · posted 4mo ago by Anonymous‭ · last activity 4mo ago by HDE 226868‭

semi-holonomic

60%

+1 −0

Is $E=mc^2$ true for all frame of references?

1 answer · posted 1mo ago by Anonymous‭ · last activity 1mo ago by Anonymous‭

special-relativity mass energy relativistic-mass

60%

+1 −0

What's the meaning of "outdated" in physics?

1 answer · posted 29d ago by Anonymous‭ · last activity 6d ago by Mithrandir24601‭

terminology

50%

+0 −0

Magnetic charges to solve interaction between 2 magnetic dipoles

1 answer · posted 6mo ago by MissMulan‭ · last activity 6mo ago by Olin Lathrop‭

electrostatics

50%

+0 −0

Is that electron which jumps from one stationary state to another?

1 answer · posted 1d ago by Anonymous‭ · last activity 1d ago by Olin Lathrop‭

quantum-mechanics atoms electrons particle-physics bohr-model

71%

+3 −0

Calculate Center of Thrust

1 answer · posted 2mo ago by Josh Hyatt‭ · last activity 2mo ago by Olin Lathrop‭

force

62%

+3 −1

What does Lagrangian actually represent?

2 answers · posted 5mo ago by Anonymous‭ · last activity 5mo ago by Anonymous‭

lagrangian-formalism

66%

+2 −0

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

3 answers · posted 5mo ago by Anonymous‭ · last activity 5mo ago by Olin Lathrop‭

classical-mechanics force

50%

+0 −0

What is Apsidal Vector?

0 answers · posted 4mo ago by Anonymous‭

apsidal vectors

40%

+0 −1

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

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

decibel sound wave

66%

+2 −0

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

0 answers · posted 11mo ago by TripleFault‭

pressure young-laplace

60%

+1 −0

What does Laplace operator represent?

1 answer · posted 3mo ago by Anonymous‭ · last activity 1mo ago by Anonymous‭

laplace

57%

+2 −1

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

1 answer · posted 11mo ago by VLDR‭ · last activity 11mo ago by Olin Lathrop‭

lenses

80%

+6 −0

What is inflation in cosmology?

2 answers · posted 9mo ago by JohnDoea‭ · last activity 6mo ago by Anonymous‭

inflation cosmology

71%

+3 −0

What is virtual work?

1 answer · posted 5mo ago by Anonymous‭ · last activity 1mo ago by Anonymous‭

classical-mechanics forces virtual-work

42%

+1 −2

Book suggestion for Classical Mechanics

1 answer · posted 5mo ago by Anonymous‭ · last activity 4mo ago by Anonymous‭

classical-mechanics book-suggestion

42%

+1 −2

Is it plausible to desire a "universal" calendar applicable everywhere in our universe?

3 answers · posted 4mo ago by JohnDoea‭ · edited 1mo ago by Trilarion‭

time

66%

+2 −0

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

2 answers · posted 4mo ago by A person who doesn't know anything‭ · edited 4mo ago by A person who doesn't know anything‭

special-relativity relativity revolution aether

75%

+4 −0

What is the meaning that the universe is flat?

2 answers · posted 5mo ago by JohnDoea‭ · last activity 5mo ago by celtschk‭

universe

40%

+0 −1

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 11mo ago by VLDR‭ · closed 11mo ago by Mithrandir24601‭

time

60%

+1 −0

Superconductivity

0 answers · posted 5mo ago by MissMulan‭

solid-state superconductivity

60%

+1 −0

Find jerk of time varying force

1 answer · posted 5mo ago by MissMulan‭ · last activity 5mo ago by Mithrandir24601‭

newtonian-mechanics potential-energy acceleration

66%

+2 −0

What happens if an electron collides with a proton?

2 answers · posted 5mo ago by Anonymous‭ · edited 5mo ago by Anonymous‭

electrodynamics atoms electrons protons

33%

+1 −4

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

1 answer · posted 10mo ago by VLDR‭ · closed 6mo ago by Mithical‭

classical-mechanics

50%

+1 −1

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

2 answers · posted 7mo ago by JohnDoea‭ · last activity 5mo ago by Canina‭

Moon Gravity

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