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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Solving SHM Rigid Body Homework: Case A vs Case B
- erisedk
- · Replies 9 ·
Meter Bridge: Finding Error in Resistance
- LoveBoy
- · Replies 7 ·
Solving Equilibrium Problem: Determine tan θ
- terryds
- · Replies 3 ·
What constant p.d. should be used in a potentiometer?
- andrew700andrew
- · Replies 2 ·
Solve Bernoulli Problem: Mass of Water in Tube
- JulienB
- · Replies 9 ·
Rubber on a rotating disk (angular velocity, forces)
- sopetra
- · Replies 6 ·
Radiation of a Spherical Body Inside a Black Body
- erisedk
- · Replies 2 ·
Why is there no work done on gas from Q to R?
- toforfiltum
- · Replies 3 ·
Rolling ball goes through a loop-the-loop....
- JulienB
- · Replies 5 ·
Calculate acceleration & tension
- Melixa
- · Replies 7 ·
What is the momentum and velocity of each ball after the....?
- j doe
- · Replies 7 ·
Calculating Centripetal Acceleration at Earth's Equator
- rrosa522
- · Replies 1 ·
Is My Method for Deflecting a Beam of Electrons Invalid?
- Silverado
- · Replies 7 ·
Schrodinger Equation/verify solution
- kwagz
- · Replies 2 ·
Solving Right Hand Rule Homework with Electric & Magnetic Fields
- jtb93
- · Replies 1 ·
Proportionality statements in physics
- 123aw
- · Replies 1 ·
What Is the Sign of the Potential Difference Near a Negatively Charged Plate?
- jtb93
- · Replies 5 ·
How Do You Convert Pendulum Swings to Frequency and Period?
- DeepPatel
- · Replies 2 ·
Calculating Power of a person running up stairs
- DeepPatel
- · Replies 1 ·
Velocity and Direction of a System after Inelastic Collision
- prockotyler
- · Replies 2 ·
Use the work-energy theorem to derive an expression for v^2
- David112234
- · Replies 3 ·
Show the drift velocity is ExB/B^2
- shedrick94
- · Replies 9 ·
Why Do Identically Treated Pucks Have Different Kinetic Energies?
- Dishsoap
- · Replies 7 ·
Find the force that the larger box exerts on the smaller box
- rrosa522
- · Replies 3 ·
Deriving electric field with given potential
- AndrewAmmerlaa
- · Replies 11 ·
How Do You Calculate the Volume of a Floating Object?
- x2017
- · Replies 10 ·
Understanding Torque and Angular Momentum Conservation
- erisedk
- · Replies 4 ·
Tangential acceleration in elliptical orbit?
- erisedk
- · Replies 9 ·
Find Tangential Velocity of Star: "k" Conversion Factor Explained
- JoAstro
- · Replies 4 ·
(Statistics) Blackbody spectrum in terms of wavelength?
- Ryaners
- · Replies 4 ·
Calculating Electric Field at Multiple Points in a Charged System
- fymdmk
- · Replies 10 ·
Lorentz’s law of voltage for ac-generator
- loki4000
- · Replies 4 ·
Mirror Falling: How Long Can Person See Their Feet?
- Carbon123
- · Replies 11 ·
Energy and momentum imparted by an EM wave
- Titan97
- · Replies 1 ·
Archived How Does Air Flow Affect Pressure and Velocity in a Venturi Tube?
- SNOOTCHIEBOOCHEE
- · Replies 1 ·
Archived Calculating molality given density and molarity
- LakeMountD
- · Replies 1 ·
Magnetic Field Strength Calculation for Electron in Uniform Field
- Koh Eng Kiat
- · Replies 14 ·
What is the tension in a bar submerged in water?
- foo9008
- · Replies 57 ·
Find Answer to Wet Umbrella Problem: .97m
- xTheLuckySe7en
- · Replies 3 ·
Finding current and equivalent resistance
- snakefashion
- · Replies 2 ·
I think my AP review book has an error. Can someone check?
- Dennis Heerlein
- · Replies 1 ·
KE1 vs KE2, mechanical energy change
- normal_force
- · Replies 7 ·
Velocity emparted to a mass by the decompression of a spring
- NTL01
- · Replies 1 ·
Work-energy solution for a hanging weight
- jackthehat
- · Replies 5 ·
Kinematics - identifying and describing types of motion
- alexandria
- · Replies 20 ·
Angular Acceleration and Moment Arm
- RoboNerd
- · Replies 18 ·
Movement of electron in an electric field
- Icy98
- · Replies 10 ·
Force Systems Multiple Choice Thread
- RoboNerd
- · Replies 2 ·
Collision between 3 masses, with spring
- Karol
- · Replies 21 ·
Orthogonality of Stationary States
- BOAS
- · Replies 2 ·
Understanding the Bernoulli Equation: Solving a Fluid Dynamics Problem
- JulienB
- · Replies 25 ·
Archived Oxygen Concentration: Insects & Tracheae
- ElikuAberts
- · Replies 1 ·
Archived Thermodynamics problem, calculate energy transfer?
- kawf
- · Replies 1 ·
A particle inside eletric field
- Alois Herzog Heinz
- · Replies 3 ·
Archived Heat equation and energy transport.
- center o bass
- · Replies 1 ·
Can I Find the Moment of Inertia with Only 8 Equal Parts in My Homework Problem?
- LoveBoy
- · Replies 9 ·
What is wrong with my math here? [Kinematics]
- Kuzon
- · Replies 2 ·
Elastic gravitational collision
- GwtBc
- · Replies 5 ·
Questions related to Kinematics
- alexandria
- · Replies 12 ·
Archived Calculating Flow Rates in a Continuous Vacuum Evaporator
- tweety1234
- · Replies 1 ·
What is the Optimum Height for Drinking a Milkshake with a Vertical Straw?
- Adriano Roma
- · Replies 2 ·
Tension at at the bottom of the pendulum
- Eugen
- · Replies 10 ·
What should be the force constant of the spring?
- David112234
- · Replies 11 ·
Collision conservation of energy
- Johnson1704
- · Replies 6 ·
Calculating Tension and Net Force in Suspended Cable System
- Ellen W.
- · Replies 3 ·
Spring in a groove inside the Earth
- erisedk
- · Replies 5 ·
How fast must the spacecraft travel? Special Relativity
- VaccumEnergy
- · Replies 3 ·
Momentum and Collision help needed (2 questions)
- John Comtoi
- · Replies 4 ·
How Do Different Wavelengths Overlap in Double-Slit Interference?
- LegendLen
- · Replies 2 ·
Archived How Does Fourier's Law Apply to Heat Flux in a Uniformly Heated Slab?
- tweety1234
- · Replies 1 ·
Rotating Cone and instantaneous axis of rotation
- RicardoMP
- · Replies 3 ·
Archived Heat transfer calculation across a flat plate
- tcaldwell
- · Replies 1 ·
Find the magnetic permeability of the iron bar.
- zade70
- · Replies 4 ·
Momentum question -- A boy drops a box while sliding on ice....
- kellyxx
- · Replies 11 ·
3 loop circuit, 5 resistors, 2 batteries
- JesseJC
- · Replies 20 ·
How to Calculate Time Dependent Magnetic Field with Faraday's Law
- annastewert
- · Replies 2 ·
Finding Apparent Weight with Uniform Circular Motion
- CalebtheCoward
- · Replies 2 ·
How do I calculate the normal force on a box on an inclined plane?
- John Comtoi
- · Replies 9 ·
Kirchoff's Law -- Having issues with the some signs
- OhBoy
- · Replies 14 ·
Heat conduction and phase changes
- ClassicalMechanist
- · Replies 2 ·
Find the force between two wires
- zade70
- · Replies 9 ·
Find the displacement from the equilibrium position
- zade70
- · Replies 5 ·
Phase Difference at Air-Glass Interface: 30°, λo=1μm
- nmsurobert
- · Replies 5 ·
Frames of Reference: Inertial vs Non-Inertial
- BLUE PEARL
- · Replies 9 ·
Static Equilibrium: holding a sign
- schwiffty
- · Replies 5 ·
Kinematics physics homework help -- 2 canoes crossing a river
- 30294
- · Replies 10 ·
Find the acceleration due to gravity
- zade70
- · Replies 11 ·
Head loss formula in series pipe
- foo9008
- · Replies 1 ·
Is D2/D1 = 0 the Ideal Condition for Pressure Loss in a Pipe?
- foo9008
- · Replies 3 ·
How many volts is required for a tiny spark to be created?
- ThePhysicsXV
- · Replies 10 ·
Work Done in Carnot Cycle: Adiabatic Compression
- s@ikiran
- · Replies 3 ·
Force Acting on Pipe: Why is Velocity Difference (25-25cos115)?
- foo9008
- · Replies 1 ·
Hydraulic grade line (HGL) vs energy line (EL)
- foo9008
- · Replies 10 ·
How Does a Spool of Thread Accelerate When Subjected to Force?
- frillybob
- · Replies 28 ·
Conservation of angular momentum of a stick
- 234jazzy2
- · Replies 11 ·
Magnetic Field in parallel plate capacitor
- LoveBoy
- · Replies 12 ·
Pendulum on a Relativistic Train
- Jefffff
- · Replies 5 ·
Planet orbiting around a star whose mass changes
- FruitNinja
- · Replies 7 ·
Center of Pressure: 2b/3 from Free Surface
- foo9008
- · Replies 5 ·
LR circuit in parallel, need someone to check answer
- Erik P
- · Replies 31 ·