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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Angular momentum of the particle about point P as a function of time
- hhjjy
- · Replies 13 ·
Deriving acceleration and velocity for rolling without slipping on an incline
- Huzaifa
- · Replies 18 ·
Tetherball rope wrapping around a pole
- a sad student
- · Replies 5 ·
Is power equal to potential difference divided by current?
- kara123
- · Replies 5 ·
Maximum angle made by rotating hinge with energy and gravity
- AppleiPad556
- · Replies 12 ·
What are the forces at play in an elevator cab?
- rudransh verma
- · Replies 38 ·
Acceleration-Time Graph and Velocity Multiple Choice Question
- AntSC
- · Replies 8 ·
Finding the output V of a filter
- Bolter
- · Replies 19 ·
Unbalanced force to find altitude of airplane
- a_r_part
- · Replies 4 ·
Does work = neg or pos change in potential energy?
- bluesteels
- · Replies 12 ·
To find direction and magnitude of forces acting in a system
- gnits
- · Replies 2 ·
Gravitational potential energy traveling from earth to mars
- ago01
- · Replies 7 ·
Chimney effect and pressure difference
- weirdoguy
- · Replies 10 ·
Car that undergoes non-uniform circular motion
- Father_Ing
- · Replies 1 ·
I am calculating the forces on String cheese with net force = 0
- rgtr
- · Replies 13 ·
Why is spacetime named in relativity but not in Newtonian physics?
- rgtr
- · Replies 2 ·
Virial Theorem for an expanding globular cluster
- Barbequeman
- · Replies 3 ·
Why Doesn't the E*A Equation Work for Electric Flux in This Case?
- bluesteels
- · Replies 14 ·
Calculate Crumple Zone Rigidty?
- AJ22
- · Replies 3 ·
Choosing the correct radius in a Gauss' law problem
- bluesteels
- · Replies 3 ·
Finding initial position x_c(0) for coupled masses matching a specific frequency
- Redwaves
- · Replies 16 ·
Finding principal inertias for a painted area
- fabiancillo
- · Replies 5 ·
Free body diagram for an inverted pendulum in the rolling sphere
- GottfriedLenz
- · Replies 9 ·
How to find deceleration up incline
- xwalsh
- · Replies 2 ·
Question on Einstein's opening passage of relativity
- s__1000
- · Replies 18 ·
Girl and boy on frictionless floor pulling rope acceleration
- Davidmb19
- · Replies 7 ·
Electric field due to a charged infinite conducting plate
- vcsharp2003
- · Replies 8 ·
Ball rolling down a slope ending with a loop
- Hendra
- · Replies 12 ·
Torque imposed by the Moon and Sun on the Earth given its precession
- ago01
- · Replies 6 ·
Falling and sliding stick (David Morin)
- Father_Ing
- · Replies 33 ·
Projectile Motion Experiment: Results Too High?
- burakyildiz
- · Replies 2 ·
Spring compression -- Ball colliding with a spring-mounted platform
- dge
- · Replies 2 ·
Why momentum of a ball bounced off a wall increases twice fold?
- Eobardrush
- · Replies 9 ·
Propagating Uncertainties in acceleration when using a video software
- Iwanttolearnphysics
- · Replies 6 ·
How Is the Second Leg of the Triangle Calculated in Vector Problem?
- NormalForce1
- · Replies 2 ·
Gauss's Law for a sphere with a cavity, solving for E(r)
- ThrawnGaming
- · Replies 15 ·
1D Elastic Collision between an Elephant and a Fly
- ObitoLegend
- · Replies 6 ·
Ball on a string (vertical circle)
- redlightgreen
- · Replies 2 ·
Find frequency such that two components have same average power
- Tobias Holm
- · Replies 4 ·
Quartic function of a non-ideal spring
- Semiclassical
- · Replies 1 ·
Where is the equilibrium point of a mass sliding down slacking cord?
- yucheng
- · Replies 15 ·
Why bulbs and LED diodes keep glowing after being switched off?
- pepediaz
- · Replies 21 ·
Magnitude of force acting on wedge and block
- dl447342
- · Replies 2 ·
The Quantum Uncertainty of a Particle
- maguss182
- · Replies 13 ·
To locate the centre of gravity of a rod
- gnits
- · Replies 5 ·
RL circuit after switch has been opened
- Ugnius
- · Replies 6 ·
Equivalent Capacitance and Resistance of this Circuit
- goutes1234
- · Replies 27 ·
Lightning strikes and simultaneity in special relativity
- Yink
- · Replies 1 ·
Newton's second law (My turtle named Newton being accelerated)
- rgtr
- · Replies 9 ·
Is the Spring Launching Equation Correct?
- physicsdude2
- · Replies 6 ·
Finding Spring Constant When Given Amplitude, Time, and Mass
- physicsneedslabs
- · Replies 9 ·
Particles moving on a regular hexagon
- Monsterboy
- · Replies 12 ·
How Does Torque Affect the Motion of a Disc Pulled Across a Table?
- ago01
- · Replies 3 ·
To find the distance of a horizontally suspended rod from a ceiling
- gnits
- · Replies 2 ·
Energy Efficiency Tips for Homeowners
- tomcajot
- · Replies 1 ·
Electric force due to a moving charge
- LCSphysicist
- · Replies 7 ·
Trajectory of a charged particle in the magnetic field (variable)
- acrobaticelectron
- · Replies 16 ·
Equation calculations about the coefficient of kinetic friction
- Javad
- · Replies 5 ·
Action Reaction Spring Scale Question
- Ineedhelpwithphysics
- · Replies 10 ·
Sign error in relativistic velocity addition for angle transformation
- LCSphysicist
- · Replies 3 ·
Maximum friction coefficient when a box slides on a floor with initial velocity
- Iwanttolearnphysics
- · Replies 5 ·
Is Throwing a Knife with No Spin Actually More Effective?
- Aurelius120
- · Replies 4 ·
An object oscillating in simple harmonic motion
- lorenz0
- · Replies 6 ·
Why Does a Wheel Move and How Does Torque Influence Its Dynamics?
- erensatik
- · Replies 12 ·
Potential on each of these concentric spherical shells
- vcsharp2003
- · Replies 19 ·
What is the Conservation of Energy in Spring Work at an Angle?
- hayke101
- · Replies 9 ·
Finding acceleration from two velocities over 5 seconds
- Bruh
- · Replies 13 ·
Work-energy theorem on inclined plane with friction
- Ced
- · Replies 2 ·
Excel Worksheet problems -- Piston and connecting rod connected to a crankshaft
- Franklie001
- · Replies 10 ·
Vertical spring connected between two bodies with a rope above them
- physics1000
- · Replies 16 ·
Average energy from beta particle energy distribution graph
- ASKINGHUMAN
- · Replies 2 ·
Spacecraft rotation and thermal balance calculations
- Viii
- · Replies 41 ·
Accelerating pulleys (3 pulleys and 3 masses)
- Yossi33
- · Replies 5 ·
Work on 20 kg suitcase pulled up 25° ramp with friction
- Diana Rico
- · Replies 6 ·
Calculating the Force of a Jump on the Moon
- isaacwachsman
- · Replies 10 ·
Puck on a string through a hole with hanging mass
- vibha_ganji
- · Replies 2 ·
Friction force on each foot and on each hand of a person
- dl447342
- · Replies 7 ·
Is the Angular Velocity of Pinned Rods Calculated Correctly?
- DrNG
- · Replies 5 ·
Charge density seen from a moving reference frame S' (SR + EM)
- LCSphysicist
- · Replies 1 ·
Block with friction: why is my displacement negative?
- kara123
- · Replies 14 ·
Potential energy, Wave function, Quantum physics
- HektorHusky
- · Replies 1 ·
Determine the final train speed (mass and slinky on a train)
- leafy
- · Replies 13 ·
Why is there potential difference if equal current flows through both sides?
- engineeringstudnt
- · Replies 15 ·
Conservation of linear momentum, undergrad particle dynamics
- greg_rack
- · Replies 3 ·
A fun, engaging and visual way of showing laminar flow for young kids
- LT72884
- · Replies 1 ·
Work done by friction when no other force is applied
- kara123
- · Replies 8 ·
Relativity and Simultaneity: A Cosmic Perspective
- martinlodge1964
- · Replies 10 ·
What Is the Rate of Change of Acceleration at t=2?
- LT72884
- · Replies 8 ·
Uncertainty of pendulum period and pendulum length
- dobbygenius
- · Replies 7 ·
Calculating the center of mass as an astronaut moves on a shuttle
- ago01
- · Replies 5 ·
How Do You Find the Period of a Pendulum with a Length of 35 cm?
- blueyedblonde
- · Replies 3 ·
Triangle geometry in Feynman's exercise 2.4
- czakun
- · Replies 5 ·
Calculate the net energy of this system (mass and Slinky in an elevator)
- leafy
- · Replies 3 ·
Reflectance of aluminum mirror at 500 nm wavelength
- mcas
- · Replies 5 ·
About Work done when velocity is constant
- Iwanttolearnphysics
- · Replies 12 ·
Net efficiency of a cascaded Carnot Engine and Fridge
- baseballfan_ny
- · Replies 1 ·
Trajectory of an electron traveling near a current-carrying wire
- alesdiazdeo
- · Replies 4 ·
How do car tire friction forces push the car forward?
- Ineedhelpwithphysics
- · Replies 6 ·
About KE and PE of a stone falling down a tube filled with oil
- Iwanttolearnphysics
- · Replies 10 ·
Angular kinematic problem -- An accelerating merry-go-round
- Nick tringali
- · Replies 8 ·