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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Transverse velocity of a wave at specific position and time
- Ryaners
- · Replies 4 ·
Finding angular velocity after a collision
- jhyrman
- · Replies 1 ·
Photons of light emitted within the D-lines per second?
- moenste
- · Replies 5 ·
Finding acceleration of mass pulled by two springs at different angles
- alex740rider
- · Replies 19 ·
Why does E-field go positive again beyond both charges?
- Cookiey
- · Replies 11 ·
How to Calculate Sag in Terms of Weight, Pulleys, and Distance?
- leonkhasi
- · Replies 20 ·
Conservation of Work and Energy
- CivilSigma
- · Replies 5 ·
What is the voltage across an inductor in an LR circuit?
- xSpartanCx
- · Replies 2 ·
How many turns does a baseball make during a 60.5 foot pitch?
- Cait602
- · Replies 2 ·
Interference fringes per cm with metal foil between glass plates
- Isaac Pepper
- · Replies 3 ·
How to calculate the total resistance in this circuit?
- Adel Makram
- · Replies 10 ·
Intensity of light through two polarizers
- Mddrill
- · Replies 3 ·
Find the frictional force on the block
- katie beisel
- · Replies 10 ·
Determine force that will cause cylinder to roll out of cart
- bkw2694
- · Replies 3 ·
Physics Olympiad question resistance and Electric circuit
- Hashiramasenju
- · Replies 8 ·
Distance between m=1 bright fringes for red and green laser on diffraction grating
- Barry Melby
- · Replies 1 ·
Calculating Volume Flow Rate of Olive Oil at a Processing Plant
- Ardec
- · Replies 1 ·
Relativistic Calculations for De-Broglie Wavelength
- IWantToLearn
- · Replies 3 ·
Why Does a Rolling Sphere Climb Higher Than a Sliding Particle?
- connorc234
- · Replies 2 ·
How Do I Interpret This Graph for Homework?
- sidt36
- · Replies 10 ·
Can conservation of momentum be applied here?
- ajaysabarish
- · Replies 33 ·
Electric Potential due to conducting sphere and conducting shell
- Satvik Pandey
- · Replies 38 ·
Multipole expansion of polarized cylinder
- phys-student
- · Replies 1 ·
Spring energy problem at an incline with friction
- Helpmepls11
- · Replies 1 ·
Radius of a lead nucleus and alpha particle
- Oribe Yasuna
- · Replies 20 ·
Finding average force as skier stops in snowdrift
- Serella_Madole
- · Replies 5 ·
Finding Voltage from capacitance, current and time
- Weightofananvil
- · Replies 2 ·
How can an increase in area cause a decrease in drift speed?
- MBBphys
- · Replies 6 ·
Mechanics, First year university Physics
- Isaac Pepper
- · Replies 5 ·
Faraday's law with loop of wire and resistor
- xSpartanCx
- · Replies 3 ·
Loop-de-Loop with function of angle
- Indira_Clueless
- · Replies 25 ·
Calculating Fringe Positions in Two-Slit Interference Patterns
- Barry Melby
- · Replies 2 ·
Finding the electron drift speed
- MBBphys
- · Replies 2 ·
Finding the H Field from the E Field
- lcr2139
- · Replies 3 ·
Angular velocity of a rod - translational KE?
- Alettix
- · Replies 15 ·
What is the magnitude of the force exerted by friction?
- CStudy
- · Replies 4 ·
How to approach physics work problems
- planetking25
- · Replies 6 ·
What Is the Smallest Angular Separation the Human Eye Can Resolve?
- Barry Melby
- · Replies 1 ·
Force on a -12 μC charge in a 150,000 N/C electric field
- KenG3586
- · Replies 1 ·
Potential in case of concentric shells program
- gracy
- · Replies 7 ·
Thermodynamics of Sealed Cylinder with Piston
- beetlejuice
- · Replies 14 ·
What is the velocity at the midway point of projectile motion?
- rasen58
- · Replies 5 ·
Error Propagation - Reconciling Two Approaches
- cjc0117
- · Replies 5 ·
Force Tension and Force Resistance
- SherlockIsReal
- · Replies 4 ·
Elastic collision between 2 different masses
- Yeldarb
- · Replies 4 ·
Finding the friction before slipping
- Jack.525
- · Replies 9 ·
Glass beads bouncing on a balance pan
- toboldlygo
- · Replies 9 ·
Uniform Circular Motion and Centripetal acceleration
- suyashr99
- · Replies 8 ·
Which voltage measurement to use with Ohm's law
- Meezus
- · Replies 9 ·
Thermodynamics- conservation of heat and energy
- PhysicsInNJ
- · Replies 13 ·
Lab experiment on moment of inertia dynamic
- tj Cho
- · Replies 7 ·
Transverse Oscillation of horizontal Mass-Springs system
- omegasquared
- · Replies 13 ·
Really with lab derivation -- Rolling objects down an incline
- Dusty912
- · Replies 1 ·
Centrifugal and centripetal forces on a half pipe
- galadriel3562
- · Replies 8 ·
A shell explodes into two identical fragments; find v
- toboldlygo
- · Replies 2 ·
Magnetic field of a bent wire and Biot Savart law
- whatisreality
- · Replies 2 ·
Physics Olympiad question Electric circuit
- Hashiramasenju
- · Replies 11 ·
Finding tension in a rope with forces on an inclined plane
- goldfish9776
- · Replies 10 ·
Why is effective resistance 4 ohm and not 4.4 ohm?
- Icy98
- · Replies 14 ·
How can I find the velocity of the combined cars after collision?
- lola2000
- · Replies 4 ·
Basic kinematics: projectile motion
- Ryaners
- · Replies 3 ·
Tension of a rope over a pulley
- goldfish9776
- · Replies 22 ·
Laplace equation in spherical coordinates
- Fgard
- · Replies 7 ·
Why is the voltage across a broken lamp 12V?
- Icy98
- · Replies 4 ·
Making a crude radio (Difficult/Long)
- Euclid4
- · Replies 9 ·
Direction of current in a magnetic field when loop is square
- vizakenjack
- · Replies 1 ·
Power loss when fan is connected; finding current
- vizakenjack
- · Replies 1 ·
How do electric field and potential difference change between parallel charged panels?
- catch22
- · Replies 5 ·
How Can the Acceleration of a Crate on a Truck Be Determined?
- Jonski
- · Replies 11 ·
Time and time intervals when using kinematic equations
- nerf225
- · Replies 5 ·
Two static equilibrium rope tension problems
- Meezus
- · Replies 2 ·
Intro to Uniform Circular Motion/Centripetal Acceleration
- a lone fishy
- · Replies 10 ·
Working out kinetic energy and speed
- Meezus
- · Replies 2 ·
Envelope function for two sine curves
- kmsiva
- · Replies 4 ·
How does Band Gap and Refractive index relate to Wavelength?
- Nyfinscyf
- · Replies 2 ·
Values of ##k## for which ##A_{ij}A_{ij} = |\vec a|^2##?
- Incand
- · Replies 2 ·
Equilibrium and find static friction
- PAstudent
- · Replies 1 ·
Momentum and Speed Relativity in a Moving Reference Frame
- Yousufshad
- · Replies 24 ·
How Does Replacing a Sphere Affect Water Level in a Bowl?
- ScrubTier
- · Replies 7 ·
A rocket going up with acceleration =
- David112234
- · Replies 2 ·
Why doesn't mutual inductance create a self-sustaining cycle?
- Grim Arrow
- · Replies 10 ·
Ground state energy eigenvalue of particle in 1D potential
- upender singh
- · Replies 6 ·
Calculating the Radius of a Charged Spherical Water Drop
- gracy
- · Replies 6 ·
Potential V at point P on the axis of the ring.
- gracy
- · Replies 1 ·
A small misunderstanding about waves
- NooDota
- · Replies 13 ·
Find the position of the lens between two holes and screen
- moenste
- · Replies 10 ·
Electric field and potential problem
- gracy
- · Replies 3 ·
How many bullets does an astronaut need to fire to return to the space shuttle?
- lethal-octo
- · Replies 7 ·
Is Tensile Force the Same as Tension in Physics Calculations?
- jbrandon
- · Replies 22 ·
What rules governs the mutual induction
- Harrison G
- · Replies 1 ·
Why does the moment from r_E × w relate to AD?
- goldfish9776
- · Replies 30 ·
Load Acting on Robot Arm Driven by Electric Motor
- Anto Ronson
- · Replies 1 ·
How Is the Electric Field Intensity Calculated on a Charged Sphere's Surface?
- gracy
- · Replies 33 ·
Working out speed, kinetic energy and resistive force
- Meezus
- · Replies 11 ·
System of lenses with a light source at first focal point
- alivedude
- · Replies 16 ·
Projectile Motion - Center of Mass
- annastewert
- · Replies 1 ·
Force to stabilize a door - torque
- r26h
- · Replies 2 ·
Power dissipated by resistor -- Right answer, but need insight
- kostoglotov
- · Replies 32 ·
Why is gravitational potential energy negative when force and displacement are collinear?
- CivilSigma
- · Replies 2 ·