Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
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Thermodynamics and adiabatic lines -- Prove this statement
- LCSphysicist
- · Replies 2 ·
Proving the differential of daylight hours with latitude
- CaptainAntiFunn
- · Replies 1 ·
What is the Correct Equation for Velocity on a Curved Surface?
- NTesla
- · Replies 27 ·
Thermodynamics: work done on the atmosphere by an expanding gas
- LCSphysicist
- · Replies 2 ·
Particle in equilibrium (balancing forces on an object on an incline)
- Justin_Lahey
- · Replies 5 ·
Question related to a gamma spectrometer
- patric44
- · Replies 14 ·
Uncertainty of the Best Value from a Multiple-Trial Experiment
- WannaLearnPhysics
- · Replies 6 ·
Mass of vapor per hour for heating water
- songoku
- · Replies 2 ·
Calculating the uncertainty with this measurement
- LCSphysicist
- · Replies 3 ·
Do vector components always form right angles?
- ianc1339
- · Replies 5 ·
Why Does Light Form a Cone When Refracted in a Swimming Pool?
- joelkato1605
- · Replies 10 ·
Spherical shells (inner conducting and outer nonconducting)
- goohu
- · Replies 11 ·
Find the charge distribution from the given E-field (spherical)
- goohu
- · Replies 11 ·
Find the range of an object coming off an inclined plane
- ZapiusMaximus
- · Replies 1 ·
Understanding Christoffel Identity and its Application in Differential Geometry
- etotheipi
- · Replies 2 ·
How to calculate the magnitudes of three forces around a hexagon
- gnits
- · Replies 17 ·
Moment of Inertia with pulley and two masses on a string (iWTSE.org)
- TomK
- · Replies 8 ·
Centre of Mass of a Uniform Cuboid -- Show that it is at the Center
- patrykh18
- · Replies 8 ·
Beta Minus and Beta Plus Decay Disintegration Energies
- Mark Zhu
- · Replies 2 ·
Parallel Plate Capacitor with Dielectric Connected to a Battery
- physconomic
- · Replies 3 ·
Using Equipartition theory to solve the root mean square of a angle.
- Jameskd
- · Replies 2 ·
Two charges inside and outside a hollow conductor
- Selab
- · Replies 4 ·
Forces on a body with vectors (IWTSE.org)
- TomK
- · Replies 6 ·
Angular momentum conservation with spinning student and weights
- MattAstros
- · Replies 12 ·
How many Photons per second are entering the pupil?
- clamatoman
- · Replies 6 ·
What is the maximum frictional force?
- Shaye
- · Replies 4 ·
Physics problem relating to an inclined plane and a spring oscillation
- arhzz
- · Replies 14 ·
Understanding Nuclear Stability: The Role of Binding Energy
- Mark Zhu
- · Replies 5 ·
Finding the angle at which a box slides on an inclined plane with friction
- sylent33
- · Replies 8 ·
An experiment for the determination of hydrogen ionization energy
- patric44
- · Replies 1 ·
What is the origin of the minus sign in the derivatives of an oscillating body?
- Ugnius
- · Replies 1 ·
Polarization of a solid sphere of nonconducting material
- goohu
- · Replies 1 ·
Nonlinear Relation in Wheatstone Bridge Experiment
- jezza10181
- · Replies 3 ·
Circular trajectory traveled by a charged particle in a magnetic field
- greg_rack
- · Replies 3 ·
Calculating vector cross product through unit vectors
- greg_rack
- · Replies 5 ·
Why does torque balance depend on choice of rotation axis in statics?
- Taulant Sholla
- · Replies 6 ·
How much energy would enter your pupils from an explosion in space?
- cestlavie
- · Replies 2 ·
Magnetic flux given magnetic field and sides (using variables)
- cestlavie
- · Replies 7 ·
Two spinning disks, did I mess up?
- etotheipi
- · Replies 5 ·
Finding the Uncertainty in the motion of a pendulum
- aatari
- · Replies 5 ·
Imminence of movement with movable pulleys
- A13235378
- · Replies 1 ·
How Does the Amplitude of a Pendulum Affect Timekeeping in Clocks?
- arhzz
- · Replies 7 ·
Angular acceleration of reflectors on a rod from EM radiation
- Shipnutz
- · Replies 1 ·
Statics Problem -- A bucket suspended between two walls by a rope and pulley
- Nicolas32
- · Replies 7 ·
How to Determine the Liquid's Refractive Index in a Newton's Rings Experiment?
- ChrisWM
- · Replies 1 ·
Compton Scattering: Determining the Energy of a Scattered Gamma Ray
- ChrisWM
- · Replies 1 ·
Find the ratio of the energy of the La characteristic x-ray to the Ka
- ChrisWM
- · Replies 2 ·
Rutherford Scattering of an Alpha Particle
- ChrisWM
- · Replies 2 ·
Questions related to the current between the plates of a vaccum tube?
- patric44
- · Replies 15 ·
Magnetic Field, Field Intensity and Magnetisation
- Mr_Allod
- · Replies 6 ·
Using Physics to explain the motion of Olympic Divers
- greedygnome
- · Replies 1 ·
Collisions, Impulses and Impulsive Tension
- SilverSoldier
- · Replies 17 ·
Electrostatics - two charged balls
- polibuda
- · Replies 16 ·
Derivation of the Child-Langmuir law?
- patric44
- · Replies 1 ·
What time is needed to move water from a pool to a container?
- songoku
- · Replies 47 ·
Gradient of 1/|r-r'| with different methods
- TheGreatDeadOne
- · Replies 5 ·
Checking Kirchhoff's current law
- Special One
- · Replies 1 ·
Length of sides of a wire loop in a uniform magnetic field
- cestlavie
- · Replies 3 ·
Number of atoms - Crystal Struture
- Mathew Murdock
- · Replies 21 ·
Moments Question (IWTSE.org) -- Three balances and two masses
- TomK
- · Replies 4 ·
Why is angular momentum constant for central forces?
- tryingtolearn1
- · Replies 1 ·
Why Does Kinetic Energy Change After Collision in EENGA 2019 Question?
- adz7861
- · Replies 3 ·
EENGA 2019 Momentum question -- collision of two masses
- adz7861
- · Replies 6 ·
Electric Circuit: Path of Least Resistance
- adz7861
- · Replies 1 ·
Is a Crash Inevitable Given the Conditions Described?
- bolzano95
- · Replies 7 ·
Legendre Polynomials as an Orthogonal Basis
- physconomic
- · Replies 2 ·
Understanding i(t) and v(t) Calculations
- sofiapastrana
- · Replies 1 ·
1 significant digit but the answer doesn't make sense
- john merrick
- · Replies 4 ·
Finding current direction in two-loop magnetic circuit with Lenz's law
- archaic
- · Replies 9 ·
Relativity: Force and a Collision
- Amrator
- · Replies 2 ·
Path that requires the least time to travel along
- bbal
- · Replies 3 ·
Rigid body rotation -- A person walking around a merry-go-round
- Butterfly41398
- · Replies 3 ·
Equivalent Capacitance of a Triangular Network of Capacitors
- connor8771
- · Replies 9 ·
How to Find the Tension in the Rope?
- Butterfly41398
- · Replies 1 ·
Equilibrium of concurrent forces -- 3 Pulleys and 2 Weights
- Butterfly41398
- · Replies 1 ·
Using Kirchhoff's Laws to Solve this Circuit with Voltage and Current Sources
- sofiapastrana
- · Replies 10 ·
Why do Newton's laws and energy methods give the same result for h/hypotenuse?
- ChaoticNeutralStuden
- · Replies 5 ·
Choosing Between Options: Reasons & Analysis
- Andrei0408
- · Replies 12 ·
Motion of a rocket with propellant exhaust gas speed = constant
- arhzz
- · Replies 6 ·
Two light sources are a distance D apart
- romanski007
- · Replies 11 ·
Is d=r=0.5m or d=2r, so r=0.25m for Gravitational Potential Energy?
- Andrei0408
- · Replies 2 ·
Expression of the force derived from this potential
- Andrei0408
- · Replies 2 ·
What is the Relationship Between Force and Weight?
- Northern Cardinal
- · Replies 3 ·
Centre of mass of two boaters in a small rowboat
- Andrei0408
- · Replies 9 ·
Tension measured by a voltmeter of given bottom scale and current range
- greg_rack
- · Replies 8 ·
Uniformly accelerated linear motion downwards
- Andrei0408
- · Replies 5 ·
Spaceship is approaching the Earth with an unknown speed
- Frostman
- · Replies 25 ·
What happens if t is greater than half-life?
- gabriellelee
- · Replies 3 ·
Calculating Velocity Vector of Object in 2D Space
- justinpaul
- · Replies 10 ·
Applying Kirchhoff's laws for a loop analysis
- greg_rack
- · Replies 8 ·
Terminal velocity of a falling object with air resistance
- OscarF
- · Replies 25 ·
Relativity problem -- A person walking in a train that is traveling at 3c/5
- LCSphysicist
- · Replies 2 ·
Understanding Exercise 3 and 8 in Freefall and Motion Law
- Andrei0408
- · Replies 8 ·
Special Relativity - relative motion of two bars
- John Sellars
- · Replies 3 ·
Compton Effect with the electron initially moving
- sciencec
- · Replies 13 ·
Find the capacitance of a half-full capacitor
- madafo3435
- · Replies 12 ·
Two charges accelerated first by ##\Delta{V}##, then by ##\vec{B}##
- mcastillo356
- · Replies 11 ·
Components of a Plane of Separation Problem
- LCSphysicist
- · Replies 4 ·
Find the electric field from polarization
- goohu
- · Replies 1 ·
The first law of thermodynamics for open systems
- Gaby
- · Replies 16 ·