<we><edit> <!-- questions and answers -->
classical-mechanics
renormalization
quantum-entanglement
statistical-mechanics
friction
condensed-matter
rotational-dynamics
special-relativity
collision
waves
terminology
hilbert-space
mass
optics
velocity
quantum-spin
laser
electrical-resistance
acceleration
astronomy
material-science
metric-tensor
homework-and-exercises
atomic-physics
cosmology
homework-and-exercises
Physics lens/optics and collision problems AP
homework-and-exercises
optics
collision
Characteristics of a tight string
homework-and-exercises
newtonian-mechanics
string
Stationary v/s Static
homework-and-exercises
general-relativity
metric-tensor
coordinate-systems
Special Relativity paradox of bridge and bus
homework-and-exercises
special-relativity
reference-frames
Is the conjugate of a solution to the time-independent Schroedinger equation also a solution?
quantum-mechanics
homework-and-exercises
wavefunction
schroedinger-equation
complex-numbers
What will happen if the nuclear reactions in the Sun stop suddenly?
homework-and-exercises
astrophysics
sun
estimation
stellar-physics
Confusion in the derivation of the potential of a magnetic shell
homework-and-exercises
electromagnetism
potential-energy
classical-electrodynamics
Constructive interference from a reflector
homework-and-exercises
electromagnetic-radiation
reflection
interference
Vertical Sinusoidal motion
homework-and-exercises
newtonian-mechanics
Electric and magnetic fields within and outside a current carrying conductor
homework-and-exercises
electromagnetism
magnetic-fields
electric-fields
Find the angular speed of the smaller gear?
homework-and-exercises
rotational-kinematics
Deriving the Poisson bracket relation of the Ashtekar variables
homework-and-exercises
general-relativity
hamiltonian-formalism
poisson-brackets
Exercise with Lagrangian and Hamiltonian
homework-and-exercises
classical-mechanics
lagrangian-formalism
hamiltonian-formalism
hamiltonian
How to get the 2d Einstein tensor in a spherically symmetric spacetime by varying the reduced Einstein-Hilbert action?
homework-and-exercises
general-relativity
black-holes
metric-tensor
Calculate angular velocity from rotation matrix
homework-and-exercises
coordinate-systems
rotational-kinematics
angular-velocity
How can I find the speed of the ball at the bottom of the sloping plane?
homework-and-exercises
kinematics
Proof of "non-existence" of marginals of the Husimi $Q$-function
homework-and-exercises
quantum-optics
phase-space
wigner-transform
deformation-quantization
Biotâ€“Savart law for a finite wire or the center of a square coil
homework-and-exercises
electromagnetism
magnetic-fields
Relative velocity of light in a moving glass medium
homework-and-exercises
special-relativity
Relativity in Light Communication
homework-and-exercises
special-relativity
speed-of-light
velocity
time-dilation
Solving the Klein-Gordon Equation with a Fourier Transform
homework-and-exercises
quantum-field-theory
klein-gordon-equation
Need some help on Physics Problem
homework-and-exercises
newtonian-mechanics
forces
projectile
How to compute the charge as a function of time in a simple $CL$ circuit?
homework-and-exercises
electric-circuits
charge
capacitance
inductance
How to calculate effective spring constant $k$?
homework-and-exercises
newtonian-mechanics
harmonic-oscillator
spring
How can we find Lagrangian of non-conservative systems?
homework-and-exercises
lagrangian-formalism
potential-energy
dissipation
How big would my telescope have to be if I wanted to see the Mars rover from my backyard?
homework-and-exercises
optics
astronomy
estimation
telescopes
Coulomb's Law and conversion of nano-columbs/coulombs
homework-and-exercises
charge
Phonon calculation of Hexagona Close Packed structure
homework-and-exercises
condensed-matter
solid-state-physics
crystals
phonons
Simple Plane pendulum
homework-and-exercises
classical-mechanics
Basic Thermodynamics: Quasistatic Adiabatic Process
homework-and-exercises
thermodynamics
adiabatic
A doubt about collisions and conservation of momentum
homework-and-exercises
newtonian-mechanics
momentum
conservation-laws
collision
How should the hydrostatic equation be set up for the sun?
homework-and-exercises
fluid-dynamics
astrophysics
equilibrium
hydrostatics
Maximum Height for U-Tube (fluids)
homework-and-exercises
hydrostatics
Question about superconductivity
homework-and-exercises
electromagnetism
electricity
magnetic-fields
superconductivity
What's the maximum possible speed with which a satellite can orbit the earth?
homework-and-exercises
newtonian-mechanics
newtonian-gravity
orbital-motion
satellites
How did Feynman derive this formula for the current of particles in a gas?
homework-and-exercises
diffusion
Bottle stability optimization
homework-and-exercises
rotational-dynamics
collision
stability
Pulley with inner and outer grooves
homework-and-exercises
newtonian-mechanics
string
Question on the Rydberg - Ritz Fromula
homework-and-exercises
atomic-physics
How Do I solve this problem related to gear trains?
homework-and-exercises
kinematics
rotational-kinematics
geometry
Review the answer
homework-and-exercises
newtonian-mechanics
centripetal-force
Centre of Mass and collisions
homework-and-exercises
newtonian-mechanics
collision
Decouple differential equations
homework-and-exercises
newtonian-mechanics
newtonian-gravity
differential-equations
A heavy chain with upper end falling with constant velocity
homework-and-exercises
newtonian-mechanics
Equal resistance in parallel circuit
homework-and-exercises
electric-circuits
electrical-resistance
Explain the shell theory for point mass outside the hollow shell?
homework-and-exercises
newtonian-gravity
symmetry
Circular motion, kinetic friction and tension
homework-and-exercises
newtonian-mechanics
rotational-dynamics
friction
string
Time evolution of a state
quantum-mechanics
homework-and-exercises
angular-momentum
wavefunction
time-evolution
Position from a Velocity-Time graph
homework-and-exercises
kinematics
velocity
integration
calculus
Acceleration components of a falling object
homework-and-exercises
newtonian-mechanics
kinematics
projectile
Calorimetry Problem
homework-and-exercises
thermodynamics
temperature
At what speed was the positron moving in the Anderson experiment?
homework-and-exercises
special-relativity
antimatter
elementary-particles
Force problem related to adhesive and bonding
homework-and-exercises
forces
material-science
adhesion
How to obtain a vector relation for the Rabi frequency?
quantum-mechanics
homework-and-exercises
quantum-spin
............ Diode
homework-and-exercises
electric-circuits
electrical-resistance
semiconductor-physics
batteries
The velocity of a point charge moving in a uniform magnetic field
homework-and-exercises
magnetic-fields
Finding a path of beam in a gradient-index media
homework-and-exercises
optics
refraction
variational-calculus
Temperature distribution in a cylinder with no heat generation
homework-and-exercises
thermodynamics
Normalization of the square of Green's function
homework-and-exercises
greens-functions
normalization
Finding a path of beam in a gradient-index media
homework-and-exercises
optics
refraction
variational-calculus
How to calculate a planet's tangential velocity moving in an elliptic orbit?
homework-and-exercises
newtonian-mechanics
newtonian-gravity
orbital-motion
celestial-mechanics
Dispersion relation from Hamiltonian
quantum-mechanics
homework-and-exercises
hamiltonian
tight-binding
bloch-oscillation
Simple Harmonic Motion: Tension in a pendulum's string
homework-and-exercises
equations-of-motion
Potential energy of a ball in multiple cases
homework-and-exercises
newtonian-mechanics
potential-energy
collision
I am trying to understand forces
homework-and-exercises
forces
How to calculate the angular momentum states of isotropic quantum harmonic oscillator?
quantum-mechanics
homework-and-exercises
angular-momentum
harmonic-oscillator
spherical-harmonics
Finding normal and tangential velocity and acceleration for motion along a 3D curve
homework-and-exercises
kinematics
acceleration
velocity
coordinate-systems
What $\oint\vec{B}\cdot d\vec{l}=51.5\mu T\cdot m$ mean?
homework-and-exercises
electromagnetism
maxwell-equations
si-units
Kinetic Energy of a rod with two ends moving
homework-and-exercises
newtonian-mechanics
rigid-solid
Lagrange's equation derivation Kinetic energy
homework-and-exercises
newtonian-mechanics
lagrangian-formalism
differentiation
Physics exam about work had me confused
homework-and-exercises
newtonian-mechanics
work
Probability of finding a particle in a region in a state given for a wave function plus a constant
quantum-mechanics
homework-and-exercises
wavefunction
probability
Capacitor with one plate earthed
homework-and-exercises
electrostatics
charge
potential
capacitance
Relativistic relative velocity
homework-and-exercises
special-relativity
Pressure at depth
homework-and-exercises
pressure
hydrostatics
Finding the acceleration of a mass/pulley system without knowing the direction of the displacement
homework-and-exercises
newtonian-mechanics
forces
friction
Lagrangian exercise from Goldstein
homework-and-exercises
classical-mechanics
lagrangian-formalism
constrained-dynamics
How to calculate the time period of a cylinder connected to a spring
homework-and-exercises
classical-mechanics
energy-conservation
harmonic-oscillator
torque
The role of tau*natural_frequency in the driven damped oscillator
homework-and-exercises
newtonian-mechanics
frequency
oscillators
resonance
Non-Zero Electric Field Inside A Conducting Shell
homework-and-exercises
electrostatics
electric-fields
gauss-law
conductors
Need help in solving forces on inclined surface
homework-and-exercises
forces
Why would the oil rise in this situation?
homework-and-exercises
potential
dielectric
inductance
The mass needed for immersion
homework-and-exercises
density
buoyancy
Maximizing the time near a black hole
homework-and-exercises
general-relativity
black-holes
reference-frames
observers
Lagrangian and Hamiltonian formalism for damped pendulum
homework-and-exercises
newtonian-mechanics
lagrangian-formalism
hamiltonian-formalism
dissipation
How should I solve this question?
homework-and-exercises
newtonian-mechanics
forces
string
Potential inside a hollow sphere (spherical shell) given potential at surface
homework-and-exercises
electrostatics
potential
gauss-law
The amplitude of a damped spring with a weight during the 4 first oscillations
homework-and-exercises
newtonian-mechanics
friction
harmonic-oscillator
spring
General motion of a cone on an inclined surface
homework-and-exercises
newtonian-mechanics
rotational-dynamics
rigid-body-dynamics
Calculating Magnification factor required & focal length of the lens
homework-and-exercises
optics
lenses
Masses with a pulley
homework-and-exercises
newtonian-mechanics
free-body-diagram
string
Air resistance and computing the maximum height
homework-and-exercises
kinematics
projectile
drag
dissipation
Line Integral of Vector Field without parametrization?
homework-and-exercises
integration
mathematics
vector-fields
calculus
Magnetic force Need To Warp Steel / Metal
homework-and-exercises
electromagnetism
magnetic-fields
applied-physics
How can electric field representation be obtained from Enge representation using Maxwell's equations?
homework-and-exercises
electrostatics
electric-fields
maxwell-equations
gauss-law
Why do Global phase transformations lead to the conservation of charge?
quantum-mechanics
homework-and-exercises
conservation-laws
charge
gauge-invariance
Vertex factor for $\frac{g}{4} (A_{\nu}A^{\nu})^2$ in QED
homework-and-exercises
quantum-field-theory
lagrangian-formalism
feynman-diagrams
Why do only electro-magnetic waves have momentum and mechanical waves do not?
quantum-mechanics
homework-and-exercises
newtonian-mechanics
waves
momentum
How to get the (coefficient of) wavefunction of the electron in the jellium model?
quantum-mechanics
homework-and-exercises
electronic-band-theory
Help me find the equivalent capacitance between A and B?
homework-and-exercises
capacitance