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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Satellite orbiting the Earth (heat radiation)
- glorfindel1000
- · Replies 2 ·
Substended angle, rotational kinematics
- bulbasaur88
- · Replies 1 ·
How Is the Semimajor Axis Calculated for a Distant Planet's Orbit?
- VU2
- · Replies 15 ·
Understanding Spark Production in Dissectable Glass Capacitors
- Stryker331
- · Replies 5 ·
Boundary conditions for 2 ropes fixed to a massless ring with a damper
- Redwaves
- · Replies 8 ·
Moment of Inertia of a 4 rod system
- Aurelius120
- · Replies 3 ·
Boats in a triangle colliding after some time
- RubroCP
- · Replies 2 ·
Can Temperature Alone Affect the Volume of Air in a Room?
- Serhiy
- · Replies 23 ·
Solving a Rod-Particle System: Troubles with Forces
- greg_rack
- · Replies 7 ·
Understanding the electric force felt by the charges on a sphere
- zenterix
- · Replies 1 ·
Limiting radius ratio for tetrahedral
- tanaygupta2000
- · Replies 1 ·
What Causes Angular Acceleration and Torque in a Free Body Diagram?
- dl447342
- · Replies 10 ·
How to interpret a passage in Purcell's Electricity and Magnetism
- zenterix
- · Replies 4 ·
Effect on net torque and net force on spools
- dl447342
- · Replies 9 ·
The angular acceleration and period of a pulsar
- Ursa
- · Replies 1 ·
How Do Electromagnets Repel Each Other in a Zero-Resistance Environment?
- Student149
- · Replies 6 ·
What is the meaning of work done for non-uniform circular motion?
- hhjjy
- · Replies 11 ·
Solving a Problem: Forces Acting on P
- greg_rack
- · Replies 5 ·
Comparing Energy and Movement on a Swing and Water Slide
- ABCM12
- · Replies 4 ·
Confusion with force components
- rudransh verma
- · Replies 21 ·
Tension and Angle Analysis for Traction in a Broken Leg
- defaultusername
- · Replies 3 ·
Magnitude and average value of energy intensity of light beam
- dl447342
- · Replies 10 ·
About work done through exercise (push ups)
- Iwanttolearnphysics
- · Replies 4 ·
How Do Support Reactions Affect 2D Static Equilibrium in a Shopping Cart?
- muna
- · Replies 6 ·
Momentum of Cube: Magnitude and In-Between Speed
- dl447342
- · Replies 6 ·
What is the maximum spring displacement?
- leafy
- · Replies 10 ·
Kinematics and One Dimensional Motion
- ayans2495
- · Replies 3 ·
Total KE = Sum of Translational & Rotational KE: Proving the Equation
- Afo
- · Replies 4 ·
On which objects can we apply Gauss' Law to find the electric field?
- zenterix
- · Replies 10 ·
How Does Increasing Resistance Affect Current Flow in a Circuit?
- REEEEEEEE
- · Replies 4 ·
About Kinetic Energy of a ball falling vertically and bouncing up
- Iwanttolearnphysics
- · Replies 23 ·
Find the maximum KE of a charged Disc
- Hamiltonian
- · Replies 1 ·
Electric field is constant around charged infinite plane. Why?
- zenterix
- · Replies 4 ·
Shooting an arrow through the spokes of a turning wheel
- Ursa
- · Replies 7 ·
Diving airplane as a projectile
- rudransh verma
- · Replies 46 ·
Flat Belt and Pullies with different Coefficients
- Spencer25
- · Replies 5 ·
Two Mass Three Rope Tension Problem
- HS21
- · Replies 2 ·
How do I accurately calculate optical cycles in a femtosecond laser pulse?
- rinalai
- · Replies 22 ·
When it states "in terms of a, b, c" do you need to use all variables?
- Solweak
- · Replies 6 ·
Relative Motion problem involving a moving person and a moving bus
- rasofia77
- · Replies 7 ·
What is the relationship between particles and waves in QED?
- Shreya
- · Replies 7 ·
Velocity vector addition problem
- evo13
- · Replies 16 ·
Bernoulli’s Equation and External Forces
- Khalid Qasim
- · Replies 4 ·
Complex collision with masses and Velcro
- ago01
- · Replies 4 ·
Linear speed of sphere as it passes through lowest point
- dl447342
- · Replies 2 ·
About steel balls of different masses and net force
- Iwanttolearnphysics
- · Replies 7 ·
Angular velocity of rod and bug
- p37
- · Replies 6 ·
Help with 2D mass-spring-damper system
- newbeee
- · Replies 2 ·
Calculate the time to reach the floor in seconds
- LokLe
- · Replies 10 ·
Gravitational Forces between two masses
- SpectraPhy09
- · Replies 5 ·
Understanding the Use of the Long Jump Formula R=9.21m and Its Derivation
- rudransh verma
- · Replies 51 ·
At what frequency can Planck's law be used to determine the temperature?
- Lambda96
- · Replies 5 ·
Newton's second law -- Crate sliding in the back of an accelerating truck
- Franklie001
- · Replies 42 ·
When will the particles collide?
- rudransh verma
- · Replies 18 ·
Solving for Distance, Velocity and Acceleration
- jenny121
- · Replies 3 ·
The relationship between angle and static coefficient
- Solweak
- · Replies 6 ·
Help finding the magnetic field of a current loop
- Boltzman Oscillation
- · Replies 5 ·
Induced Current Direction in a Changing Magnetic Field
- guyvsdcsniper
- · Replies 1 ·
Spring potential and kinetic energy
- san12345
- · Replies 12 ·
Verifying properties of Van der Waals Gas
- baseballfan_ny
- · Replies 2 ·
Relative Velocity of a Passenger Hitting the Dashboard in a Car Crash
- brochesspro
- · Replies 17 ·
Total work done while pushing a wheelchair
- TheBigDig
- · Replies 4 ·
Projectile negative vertical displacement
- rudransh verma
- · Replies 12 ·
The binding energy per nucleon of tritium
- Redwaves
- · Replies 10 ·
Circuit Design Help: Progress & Resources
- Aisu01
- · Replies 1 ·
Find Final Kinetic Energy of a particle subject to two forces
- maguss182
- · Replies 1 ·
Calculate the electric field due to a charged disk (how to do the integration?)
- zenterix
- · Replies 7 ·
Peak of the amplitude resonance curve
- horserider37
- · Replies 16 ·
Applying Newton's 3rd Law to Tension in a Tug of War
- kara123
- · Replies 7 ·
Forces and laws of motion -- Big gorilla hanging from two vines
- HiReinhardt
- · Replies 3 ·
Electric field created by two charged circular arcs?
- zenterix
- · Replies 2 ·
Phase factor in quantum mechanics
- Shreya
- · Replies 5 ·
Buoyancy: Will the Object float or sink or remain at a depth?
- SpectraPhy09
- · Replies 11 ·
Motion in 1D-Graphs: Is Option D Correct?
- SpectraPhy09
- · Replies 18 ·
How to choose the correct function to use for a Taylor expansion?
- zenterix
- · Replies 7 ·
(Movement Homework) What is the speed of a marble falling on the moon?
- sigurdfromnor
- · Replies 7 ·
Newton's laws — Two stacked blocks sliding on a frictionless floor
- nirlalush
- · Replies 17 ·
Impulse-momentum theorem problem
- Haorong Wu
- · Replies 14 ·
Spring deflection problem using energy equations
- ago01
- · Replies 2 ·
Progressive wave, wavelength moving in the opposite direction
- Redwaves
- · Replies 4 ·
Newton's laws of motion -- Force of gravity on a skydiver
- kara123
- · Replies 5 ·
A particle motion problem in the x-y plane with constant acceleration
- rudransh verma
- · Replies 36 ·
A stone projectile hitting the target
- rudransh verma
- · Replies 6 ·
Designing an orifice plate to increase the pressure in a pipe
- shekarharsha
- · Replies 1 ·
MIT OCW 8.02 Electromagnetism: how were these two limits calculated?
- zenterix
- · Replies 5 ·
Angle observed in rest frame related to relativity
- songoku
- · Replies 18 ·
Why is time = ct and not t in special relativty?
- rgtr
- · Replies 3 ·
I'm Stuck on Solving This - R2 Confuses Me
- Bookdigger
- · Replies 8 ·
Solving for Time Given Acceleration & Initial Velocity
- kara123
- · Replies 3 ·
It seems like it's simple math but I'm not sure?
- lesdayy
- · Replies 4 ·
Help with unit vector for a magnetic field
- guyvsdcsniper
- · Replies 5 ·
Why doesn't any coloured body get infinitely hot?
- Shreya
- · Replies 11 ·
How can I calculate the potential energy stored in a compressed spring?
- dge
- · Replies 4 ·
Calculate gravitational acceleration without mass of both objects
- IAmBadAtMath
- · Replies 1 ·
Computer Science Help C# or Java
- dan2222
- · Replies 1 ·
Forces acting on a car on an incline
- TheBigDig
- · Replies 4 ·
Lab Experiment - Puck Impact on Wall, Analyzing Force
- iris
- · Replies 1 ·
Does element x present a linear resistance?
- Purpleshinyrock
- · Replies 3 ·
Using suvat to find time traveled by a cannonball
- Camden
- · Replies 8 ·