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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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 ·
Help with Angular Velocity True-False Question
- 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 ·
Determining the angle while dealing with friction on an inclined plane
- 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 ·
Simple Statics Problem--what am I missing?
- 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 ·
Find the angular acceleration of two reflectors attached to a rod
- 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 ·
Calculating Gradient of 1/|r-r'|: Tips & Results
- 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 ·
Clarification on angular momentum
- 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 ·
Help! Finding Direction of Current in Magnetic Circuit
- 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 ·
Verifying Results w/ Newton's & Energy Laws: Justifying Hypotenuse=D
- 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 ·
Physics Homework Question on terminal velocity and weight
- 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 ·
Surface Pressure Coefficient Distribution of a Doublet in a Uniform Flow
- WhiteWolf98
- · Replies 2 ·
Doubt about "venturi meter" question
- math132003
- · Replies 1 ·
Discharge of a capacitor and current in an RC circuit
- greg_rack
- · Replies 13 ·
Equation Demonstration -- Simple Pendulum Analysis
- Frankie
- · Replies 5 ·
How Do You Calculate Height Without Acceleration in Physics Problems?
- Har2803
- · Replies 4 ·
Crate pushed up an inclined plane
- rrosa522
- · Replies 6 ·
Understanding the Force on a Magnetic Dipole in Different Orientations
- Mr_Allod
- · Replies 7 ·
Time constant of a discharge RC circuit, capacity and charge
- greg_rack
- · Replies 6 ·
Final electric potential difference in a circuit with two capacitors
- greg_rack
- · Replies 4 ·
The general equation of the superposition of orthogonal waves?
- patric44
- · Replies 10 ·
Creating a Website for Your Business
- jjson775
- · Replies 2 ·
Why does acceleration increase by less as angle of slope increases?
- Jojo-11
- · Replies 12 ·
Understanding of Wave swing physics
- Kakainsu
- · Replies 19 ·
Thermofluids -- A fireboat carries out a turning manoeuvre
- Gaby
- · Replies 2 ·
Why is the field within a solid conducting material zero?
- madafo3435
- · Replies 9 ·