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 -- mono and diatomic gases
- Any Help
- · Replies 2 ·
Conservation of Momentum: Pulley System
- Watney
- · Replies 4 ·
Doppler shift equation with velocity and frequency
- Erenjaeger
- · Replies 1 ·
Point mass rotating about a pole with a spring
- VMP
- · Replies 11 ·
Friction Lab? Kinetic Friction?
- Shelilla
- · Replies 17 ·
Special relativity momentum and energy conservation
- Taylor_1989
- · Replies 6 ·
What is the minimum horizontal force?
- Angela_vaal
- · Replies 15 ·
Find current given magnetic field
- ooohffff
- · Replies 3 ·
Finding voltage in circuit with capacitors (sequential)
- Cocoleia
- · Replies 1 ·
Setting up an Uncertainty Problem
- member 545369
- · Replies 5 ·
Temperature inside a box as particles escape a small hole
- igowithit
- · Replies 3 ·
ΔU, Q, W of thermodynamic process
- Any Help
- · Replies 4 ·
Does particle decay require relativistic momentum conservation?
- Isomorphism
- · Replies 7 ·
Logic gates, truth tables, circuits
- moenste
- · Replies 25 ·
Calculating Horizontal Forces in a Stream of Sand Impacting a Wall
- KneelsBoar
- · Replies 2 ·
Man sliding down rope with weight limit of 755 N
- KneelsBoar
- · Replies 5 ·
Point charge between two parallel plates (capacitor)
- Rod Alexei
- · Replies 26 ·
What would the Free Body Diagram of a Trebuchet look like?
- Physics Student 1
- · Replies 7 ·
Thermodynamic process: freezing
- Any Help
- · Replies 3 ·
How Is Angular Speed Calculated for a Pulley System?
- dennislam
- · Replies 1 ·
What is the speed of the cart 3.5 s after the fan is on?
- emily081715
- · Replies 9 ·
How Do You Calculate the Upward Force When a Calculator Rebounds Off the Floor?
- BrodieEX
- · Replies 4 ·
Light Interference: Find Condition of d for Constructive Interference
- Hamal_Arietis
- · Replies 1 ·
E-Field Through Copper Wire given drift velocity
- stephen8686
- · Replies 2 ·
Why is the linear part of a fluid drainage graph best for finding relaxation time?
- svoboda32
- · Replies 10 ·
How to find the minimum horizontal force?
- Angela_vaal
- · Replies 11 ·
Finding Velocity of a System with Work and Energy
- xTheLuckySe7en
- · Replies 3 ·
Moment of force exerted by water on tube
- Vibhor
- · Replies 33 ·
Sodium light on 2 glass bars -- What's going on here?
- tensor0910
- · Replies 2 ·
What direction would torque be on a trebuchet in motion
- Physics Student 1
- · Replies 1 ·
Find the phase difference of two oscilliators given a graph
- Taniaz
- · Replies 26 ·
Time period of system with constant restoring force
- MalachiK
- · Replies 7 ·
To find the particle's velocity
- Nikhil faraday
- · Replies 14 ·
System of particles with non-degenerate energy levels
- Elvis 123456789
- · Replies 1 ·
Projected Block and Conveyor Belt
- decentfellow
- · Replies 8 ·
Gravitational force on Halley's comet at aphelion and perihelion
- KLI897
- · Replies 2 ·
Maximum height after a collision (general solution)
- qwertymeister42
- · Replies 8 ·
Thermometer/ reproducible thermal phenomena
- Any Help
- · Replies 7 ·
What is k for the bottom spring?
- emily081715
- · Replies 9 ·
Problem Involving work, velocity, given Graph
- Sade
- · Replies 1 ·
Fraction of molecules have kinetic energy of 1/2mC^2
- igowithit
- · Replies 2 ·
Calculating Voltage in a 6x6 Resistor Grid
- RingNebula57
- · Replies 14 ·
Hockey puck collision with elastic constraint and rest condition
- ChrisBrandsborg
- · Replies 35 ·
Static Equilibrium - Ladder problem with a twist.
- Emilyneedshelp
- · Replies 7 ·
Equivalent capacitance of a system from potential difference
- Soren4
- · Replies 7 ·
How Do Pulley Systems Affect Mass Acceleration?
- Karol
- · Replies 27 ·
How can a NAND gate be used as a NOT gate?
- moenste
- · Replies 12 ·
Calculating Toolbox Mass in Horizontal Pulley System
- Haniah
- · Replies 1 ·
Elastic Pendulum with Newton's equations of motion
- ojb89
- · Replies 3 ·
Construct a truth table for the combination of logic gates
- moenste
- · Replies 1 ·
Completing a truth table for logic gate combination
- moenste
- · Replies 1 ·
Minimum safe distance from a radioactive source
- moenste
- · Replies 6 ·
Friction acting on the shot putter
- decentfellow
- · Replies 6 ·
Understanding Uniform Circular Motion to Solving Problems
- Sarina3003
- · Replies 7 ·
Vertical throw initial height 15 time 3s until hiting ground
- Justas
- · Replies 1 ·
Finding the time period using the potential
- green-beans
- · Replies 23 ·
Archived Finding the distance between two fringes in a double slit experiment
- prettykitty
- · Replies 3 ·
Given wavenumber find spring constant harmonic oscillator
- adamaero
- · Replies 4 ·
Two dimensional Elastic Collision
- CalebB-M
- · Replies 2 ·
Find the difference of heights of the objects
- annalian
- · Replies 5 ·
Where does the 2 dθ/dl term come from in the lengthening pendulum equation?
- dykuma
- · Replies 3 ·
Falling Rock Climber (Work and Energy)
- kubaanglin
- · Replies 1 ·
How to Calculate Potential Energy and Latent Heat in Physics?
- Ashleykins
- · Replies 9 ·
Orbital Potential Energy to find r and phi in terms of t.
- 10Exahertz
- · Replies 1 ·
Solve Water Balloon Lab Homework
- AStupidHippo
- · Replies 1 ·
How do i make a motor move? (i know very little)
- James lajoie jr
- · Replies 8 ·
Acceleration in circular motion
- ashraful
- · Replies 5 ·
Paradox found in my first relativity sheet
- Toby_phys
- · Replies 4 ·
Magnetisation ratio in human body using gyromagnetic ratios
- matthew1
- · Replies 1 ·
How Does Viscosity Affect Motion in a Fluid?
- dykuma
- · Replies 8 ·
Why does (AB+BA)+ = (AB)+ + (BA)+ for Hermitian operators?
- danmel413
- · Replies 1 ·
Find an expression for the net force of water on a dam
- Dusty912
- · Replies 5 ·
Your physics teacher has asked you to build a barometer
- Dusty912
- · Replies 8 ·
Kinematic equations for projectile motion.
- annalian
- · Replies 5 ·
How far from the starting point do the pieces fall on ground
- annalian
- · Replies 12 ·
Height of the rise of the object attached to the spring ?
- Buffu
- · Replies 3 ·
What will happen if angle of incidence on a glass slab is 0?
- Yatin
- · Replies 2 ·
What is wrong with our assumptions?
- cubby208
- · Replies 2 ·
Kinematics car braking scenario
- late347
- · Replies 8 ·
What is the current in this circuits?
- PhysicsNewbie321
- · Replies 24 ·
Find the speed of the object after 4 seconds
- annalian
- · Replies 2 ·
Expressing one Vector in terms of others
- DistinctlyPlain
- · Replies 2 ·
Find the maximal distance of flying
- annalian
- · Replies 1 ·
Find the speed of the particle after 0.2 seconds
- annalian
- · Replies 1 ·
Motion in 2 Directions: An Algebraic Approach
- gungo
- · Replies 1 ·
Electric potential just after switch is opened.
- TwoEG
- · Replies 9 ·
Find magnetic field at a distance from wire
- ooohffff
- · Replies 3 ·
Static Equilibrum Examples: Top, Spinning Astronaut, Satellite
- Tchao
- · Replies 2 ·
Forces on balance beam supports with gymnast standing at end
- StudyBuddy
- · Replies 5 ·
Calculating average forces on an Object
- JustynSC
- · Replies 4 ·
Maximum Torque / Evenly Spread across a lever.
- Cyclopssummers
- · Replies 1 ·
Off center hole in a current-carrying wire - magnetic field?
- RyanP
- · Replies 6 ·
Direction of induced current when one coil approaches another
- dumbdumNotSmart
- · Replies 6 ·
Finding wavelength of visible light in a well
- adamaero
- · Replies 15 ·
How Accurate Are Stopwatch Measurements in Physics Experiments?
- alisdfd
- · Replies 3 ·
How Does Young's Modulus Differ from Spring Constant in Shape and Geometry?
- Jimmy87
- · Replies 10 ·
Maximum delay to implant radon-222 source and receive prescribed dose
- moenste
- · Replies 8 ·
Infinite Wire/Surface charge question
- Decadohedron
- · Replies 2 ·
Two colliding stars: why drop the 1/2 from kinetic energy?
- Buffu
- · Replies 27 ·
Average mass of iron worn off the ring per day
- moenste
- · Replies 16 ·