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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Finding current and power in series-parallel resistor circuit
- gatsbycollege
- · Replies 11 ·
Sound wave propagating from water through steel
- Inertigratus
- · Replies 10 ·
Percent change in photon energy
- ikstellub
- · Replies 1 ·
What Is the Mass of the Block Sliding Down a Ramp?
- flyingpig
- · Replies 11 ·
Circuit Problems : Finding Current and Voltage
- gatsbycollege
- · Replies 2 ·
Velocity of 1kg particle sliding down 30° frictionless incline from 3.17m height
- wrdsmith13
- · Replies 1 ·
How Do You Prove a Vector is Perpendicular to a Plane?
- iampaul
- · Replies 1 ·
Importance of Low Resistance per Unit Length in Electrical Cables
- Kushal
- · Replies 5 ·
Heat moving through the walls of a house
- Punkyc7
- · Replies 1 ·
Where Will the Thread Break When a Stone Hangs by a Fine Thread?
- iampaul
- · Replies 1 ·
How Do Uncertainties Affect Calculations in Cookie Volume and Size Ratios?
- iampaul
- · Replies 1 ·
Calculating Elastic Potential Energy with Varying Masses
- flyingpig
- · Replies 16 ·
Thermodynamics question - does power required mean same as power output?
- visharad
- · Replies 3 ·
Stupidity at its peak find the mass
- flyingpig
- · Replies 17 ·
How to find maximum work done in an adiabatic process?
- visharad
- · Replies 3 ·
Concave mirror image height and magnification sign
- yjk91
- · Replies 1 ·
Wave Definitions - Crest and Trough
- Peter G.
- · Replies 3 ·
Rearranging a Wave Function: True or False?
- geoffreythelm
- · Replies 1 ·
Spring-Mass system with friction
- Pi-Bond
- · Replies 2 ·
Solve Series RLC Circuit for Capacitor Value
- Idividebyzero
- · Replies 5 ·
Steam driven turbine: Heat, Power, evaporation
- hootie
- · Replies 2 ·
Gravitational Force OR Angular Momentum
- mateomy
- · Replies 2 ·
Calculating Well Depth and Final Velocity of a Falling Coin
- andorei
- · Replies 14 ·
Vertical motion and qudaratic equation questions
- jmathew13
- · Replies 4 ·
Testing the field strength of a permanent bar magnet
- AUS_Chris
- · Replies 1 ·
Quadrupling radius of satellite in orbit
- widderjoos
- · Replies 6 ·
How Do You Calculate Thrust and Pressure in Fluid Dynamics and Aeronautics?
- jigoku_snow
- · Replies 7 ·
Calculating the Ratio of Electromagnetic Wave Speeds in Vacuum and Materials
- yjk91
- · Replies 2 ·
Finding the magnitude of an electric field at a distance from a surface charge
- NewtonianAlch
- · Replies 5 ·
Frictionless Banked Curve on Mars Simulates Earth Gravity
- TheClockmaker
- · Replies 5 ·
Calculating Velocity of a Falling Object with Drag Force
- sn0wxboarder
- · Replies 6 ·
Moment of Inertia and Torque problem
- kalbio
- · Replies 5 ·
Can the two slit experiment be incorporated into building design?
- TimbreofSilen
- · Replies 2 ·
Heat transfer with phase changes for ice warming
- shemer77
- · Replies 3 ·
Thin-film interference with thickness t=λ and n=1.5
- khaos89
- · Replies 9 ·
How Do Sinusoidal Waves Affect String Motion?
- tj.
- · Replies 3 ·
What is the intensity of the transmitted light?
- yjk91
- · Replies 3 ·
What is the magnitude of the magnetic field?
- n_h0987
- · Replies 1 ·
Sound intensity level of a thunder bolt
- Inertigratus
- · Replies 7 ·
Is a 15.0-g Ball from a Spring Gun Safe Without Goggles for Children?
- knowNothing23
- · Replies 2 ·
Finding RMS current in an AC solenoid
- chinye11
- · Replies 3 ·
Momentum problem with mass transfer
- Pi-Bond
- · Replies 12 ·
What Experiments Can We Conduct on Resonance and End Correction in Sound Pipes?
- dazza95
- · Replies 4 ·
Resources for learning diffraction and interference calculations
- Inertigratus
- · Replies 1 ·
Calculating electric flux with a constant electric field
- NewtonianAlch
- · Replies 1 ·
Gravitation and Archimedes principle as a spring?
- uriwolln
- · Replies 22 ·
Calculating Gravity on a Person Inside a Building
- Einstein2nd
- · Replies 2 ·
AS Physics Linear Momentum Question
- seiei
- · Replies 2 ·
Finding resistance from voltage and current measurements
- bambilmiller
- · Replies 11 ·
Electrostatic potential of two spheres
- pc2-brazil
- · Replies 2 ·
Why is C1 in parallel with the C2-C3 series combination?
- pc2-brazil
- · Replies 4 ·
Finding tension in a violin A string at 440 Hz
- Carnivean
- · Replies 1 ·
Force of friction on 25 kg block pulled up a 20 m ramp
- rjulius
- · Replies 13 ·
How Do You Calculate Buoyant Force for a Large Passenger Load?
- yumiiko
- · Replies 2 ·
F = kQq/R2 finding force problem
- xNick94
- · Replies 8 ·
Circular orbit and gravitational questions
- shemer77
- · Replies 5 ·
Calculating Time to Reach Point O with Force F = kx^-2
- Hafid Iqbal
- · Replies 11 ·
Why do parallel currents attract if their magnetic fields oppose?
- physickkksss
- · Replies 5 ·
Mass and cylinder connected by a pully system
- Houdini176
- · Replies 5 ·
Pulley with 10 N tension and 1.5 kg weight rotating 0.25 m radius
- frostedpoptar
- · Replies 13 ·
What is the acceleration of a board on two cylinders on a fixed inclined plane?
- uriwolln
- · Replies 20 ·
Acceleration of masses in pulley system with moment of inertia
- blackwing1
- · Replies 5 ·
Electrostatics problem (electron's motion in cathode ray tube)
- lillybeans
- · Replies 4 ·
Combining several resistors to achieve a specific value?
- Riscilla
- · Replies 8 ·
How Does Newton's Second Law Apply to a Bird Sitting on a Wire?
- vkash
- · Replies 3 ·
How Does Distance Affect Image Formation in Convex Lenses?
- fromthepast
- · Replies 4 ·
Calculating Focal Length and Image Height of a Lens
- fromthepast
- · Replies 6 ·
Potential Difference across capacitors in parallel.
- OUmecheng
- · Replies 8 ·
Magnetic Field of half cylinder
- n0va
- · Replies 6 ·
Does dot product always commute?
- Pollywoggy
- · Replies 3 ·
How to Calculate Impulse in Various Scenarios
- jigoku_snow
- · Replies 11 ·
Schaum’s Outlines 3,000 Solved Problems in Physics Different Versions
- GreenPrint
- · Replies 1 ·
Problem with Newtons Laws of Motion
- Ashu2912
- · Replies 17 ·
Solving the Continuity Equation
- kinglk
- · Replies 6 ·
Piston question to find temperature and pressure
- Nightlord
- · Replies 2 ·
Specify the position of the center of mass
- nayfie
- · Replies 2 ·
Minimum friction coefficient for rotating cylinder ride
- gtn013
- · Replies 2 ·
Finding units for power via Dimensional Analysis? Makes no sense
- Elysian
- · Replies 2 ·
Boundary condition for magnetic vector potential
- issacnewton
- · Replies 6 ·
Intensity of an electromagnetic wave, given only rms value of magnetic field
- KKuff
- · Replies 2 ·
Speed and Normal Force of a Bead on a Loop-the-Loop
- beyondlight
- · Replies 10 ·
Variation statement into graphs- Right?
- xNick94
- · Replies 6 ·
What formula should I use to find velocity in a newtonian physics problem?
- amochang
- · Replies 3 ·
Network theorems: Thevenin, Norton and superposition
- Lakshmi N
- · Replies 1 ·
A stone is thrown verticall upward
- ironhawk316
- · Replies 8 ·
Maxwell-Boltzmann Distribution (Statistical Mechanics)
- mateomy
- · Replies 1 ·
How Do You Calculate Net Force in Coulomb's Law?
- joe98
- · Replies 3 ·
How Do You Calculate Observed Angular Velocity from a Reference Frame?
- Adorno
- · Replies 2 ·
Minimum velocity to change radius of orbit
- kraigandrews
- · Replies 6 ·
Adiabatic piston expansion with friction
- MACH2
- · Replies 14 ·
What is the maximum height reached by a projectile fired from Earth?
- kraigandrews
- · Replies 8 ·
Police car and speeder when do they meet?
- endeavor
- · Replies 7 ·
Moment of inertia of a copper wire loop from density and cross-sectional area
- anr91
- · Replies 3 ·
Stress/Strain What is the property in a material
- pat666
- · Replies 3 ·
How to find the temperature of a black body?
- sphys4
- · Replies 9 ·
Solving an Inclined Plane Problem
- RiskX
- · Replies 1 ·
Area - 5'x6' which is the width and which is the length?
- GreenPrint
- · Replies 10 ·
Partition Function: Understanding Z in Statistical Physics
- greenfly
- · Replies 2 ·
Photoelectric Effect ~ threshold frequency dependent on incident light?
- ldesai149
- · Replies 6 ·
What is the solution for a venturi tube with water flow and pressure changes?
- Workingitout
- · Replies 1 ·