Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Potential energy of an arrangement of point charges
- acdurbin953
- · Replies 1 ·
How do similar triangles help determine the visible area in a plane mirror?
- Wing2015
- · Replies 3 ·
Charge of q5 in Electric Field Map with q4 and q6
- END
- · Replies 4 ·
Given voltage, solve for unknown resistor in a circuit
- acdurbin953
- · Replies 2 ·
Electric Field and charge location
- jeremy de leon
- · Replies 5 ·
Kinematics Projectile Motion Problem
- joeyoung1996
- · Replies 3 ·
Calculate the stress in the duralumin rod
- cyrus35
- · Replies 4 ·
Determining Wave Parameters for Interference Pattern
- ilii
- · Replies 3 ·
Work done by Air resistance on ball?
- Ivar
- · Replies 6 ·
Calculating final temperature in insulated container
- Gaith
- · Replies 1 ·
How Does Pushing Force Affect Contact Force Between Two Boxes?
- CristinaCotto
- · Replies 9 ·
Why is C the correct radioactive emitter for this decay problem?
- PhysicStud01
- · Replies 23 ·
Calculating Final Velocity of a Car Using Uniform Acceleration
- CTech2015
- · Replies 3 ·
Velocity graph of an object speeding up
- Steelers72
- · Replies 15 ·
Gear ratio requirement (RPM --> km/h)
- D.B0004
- · Replies 2 ·
Why is the cathode voltage higher in reverse bias across a PN junction?
- CKaiL
- · Replies 6 ·
Triangle Ladder equilibrium problem
- terryds
- · Replies 17 ·
Finding Distance d for Infinity Image: Diverging and Converging Lens Problem
- premed_love
- · Replies 1 ·
Matter/Electron Waves and the Davisson-Germer Experiment
- Yosty22
- · Replies 4 ·
Finding Coefficient of Kinetic Friction
- Ryan Hwang
- · Replies 2 ·
Finding bounce angle when a body hits a sphere
- Robben
- · Replies 2 ·
How long does it take for the batter to lose its charge?
- pandamonium
- · Replies 9 ·
What is the angle between the two emerging beams of light?
- FunkyFrap
- · Replies 7 ·
Finding Initial Velocity with Given Distance and Angle?
- vaironl
- · Replies 2 ·
Iron Bar Thermal Radiation Calculation
- Gaith
- · Replies 5 ·
Newton's Law of Universal Gravitation equation(s) ?
- bijou1
- · Replies 7 ·
Minima of a diffraction grating
- albega
- · Replies 6 ·
The height at which the gravity acceleration is 5x smaller
- Amar
- · Replies 9 ·
Finding the Potential of a Charged Rod on the x-axis
- camira
- · Replies 5 ·
Power dissipated by a resistor in a circuit
- plazprestige
- · Replies 2 ·
Mass on a Spring: Determine Periodic Time, Frequency & Acceleration
- Thermoman
- · Replies 6 ·
What is the Charge on a Uniformly Charged Sphere Based on Gauss' Law?
- MikeB2210
- · Replies 3 ·
Where between two charges does voltage = 0?
- Sylvia
- · Replies 6 ·
Rotation period of a space station
- ross moldvoer
- · Replies 12 ·
Log thrown off Grand Canyon: finding velocity and distance fallen
- rasofia77
- · Replies 21 ·
Driven harmonic oscillator problem
- Taylor Grubbs
- · Replies 3 ·
The acceleration of a ramp and and mass on the ramp
- Luca 123
- · Replies 4 ·
Centripal Force - Friction needed to keep a car tracking a curve
- Julian3
- · Replies 6 ·
Is the Velocity negative or positive?
- rasofia77
- · Replies 5 ·
Why is the electric field normal to a conductor surface?
- DriggyBoy
- · Replies 4 ·
Gravitational potential and kinetic energy equations
- Sonny18n
- · Replies 1 ·
Finding the center of mass of a system
- jb007
- · Replies 5 ·
Two beads connected by a taut thread on friction-less wire ring Proof
- Alexander Marks
- · Replies 1 ·
Calculating Properties of a 2.2 eV Electron
- EgpYo
- · Replies 7 ·
Finding revolution time at surface
- ross moldvoer
- · Replies 14 ·
Time derivatives of sin and cos phi
- A2Airwaves
- · Replies 1 ·
Plane velocity with tailwind using velocity addition equation
- rasofia77
- · Replies 1 ·
Find the gravitational force between then sun and the earth
- Julia Darko
- · Replies 2 ·
Finding scuba tank interior volume from standard cubic feet
- Matt766
- · Replies 9 ·
Find moment of inertia via torque and acceleration parameter
- D.B0004
- · Replies 2 ·
How Do You Properly Round in Error Analysis?
- Syed Qaiser
- · Replies 2 ·
Charge on insulating sphere and conducting shell using Gauss' law
- Sierra
- · Replies 20 ·
Distance traveled by the boat during acceleration
- RichusX
- · Replies 2 ·
Magnetic field of infinite wire
- whatisreality
- · Replies 1 ·
Will the man catch the bus if he starts 10 meters away from the door?
- stephenranger
- · Replies 2 ·
The acceleration of a ramp and mass
- Luca 123
- · Replies 7 ·
Applying law of momentum conservation
- arpon
- · Replies 16 ·
Man pulling a cube on a rough surface
- Karol
- · Replies 2 ·
Electric Field inside concentric spherical shells
- vysero
- · Replies 12 ·
Centripetal Acceleration for non uniform speed
- henry3369
- · Replies 2 ·
Relative Velocity of Ball Tossed on Moving Train
- rasofia77
- · Replies 8 ·
How Does Relative Motion Affect Perceived Speeds in a Police Chase?
- rasofia77
- · Replies 2 ·
Girl on platform pulls rope to accelerate upward
- Paola Cavazos
- · Replies 5 ·
Finding Voltages in a Circuit with Nodal Analysis
- Gwozdzilla
- · Replies 7 ·
What is the distance covered by a robotic bug moving along the x-axis?
- Poetria
- · Replies 18 ·
Thermodynamics Question Calculating change in temperature
- Gaith
- · Replies 2 ·
What is the relationship between diameter and mass per length in a steel wire?
- nesan
- · Replies 3 ·
Projectile Motion: How tall is the building?
- SamL
- · Replies 12 ·
Current required in a long wire
- rwilson5
- · Replies 1 ·
Tension in a string between two blocks
- litz057
- · Replies 45 ·
Point Charge and Charged Sphere
- skycap
- · Replies 1 ·
Electric potential and field of a charged ring at a point on the axis
- Sierra
- · Replies 5 ·
Flux through various Gauss' surfaces
- vysero
- · Replies 6 ·
Calculating Work by Friction using Integrals
- henry3369
- · Replies 2 ·
Tension of a string attached to an instrument inside rocket
- physicsquestion
- · Replies 32 ·
Calculating Reactions in Balance: A Student's Question
- clockworkrobot
- · Replies 1 ·
How much does a spring compress with 100 N force?
- brake4country
- · Replies 11 ·
Subscripts and superscripts in four vectors
- stephen cripps
- · Replies 10 ·
Calculating Electric Field Flux for Non-Uniform Fields: Gaussian Cubes Example
- vysero
- · Replies 3 ·
How did we get the formula for torque?
- rokuog
- · Replies 3 ·
How to find Best Efficiency Point for pumps in series?
- theone
- · Replies 2 ·
Solving for the Height of a Slope with Unknown Mass
- Ivar
- · Replies 4 ·
What is the voltage across C2 in this circuit?
- jake jungle
- · Replies 1 ·
DC current -- Find the 3 currents in this Battery + Resistor circuit
- jake jungle
- · Replies 6 ·
Find the acceleration of the system and the maximum force
- annalian
- · Replies 3 ·
Maximum separation between blocks on spring
- henry3369
- · Replies 2 ·
Maximum compression of spring when book drops from 0.5 m
- henry3369
- · Replies 19 ·
Two stacked blocks sliding down an inclined plane
- Kurt Madland
- · Replies 1 ·
What do I need to learn in order to describe this?
- Reflection
- · Replies 4 ·
Velocity vs time graph simple harmonic motion phase constant
- firezap
- · Replies 6 ·
In which region is it possible for electric potential = 0?
- pinkie9211
- · Replies 3 ·
How many oscillations until a damped block comes to rest?
- VishalChauhan
- · Replies 6 ·
Earth-Asteroid collision problem
- Nathew
- · Replies 12 ·
How Do You Calculate the Constant in a Helicopter's Takeoff Equation?
- RJLiberator
- · Replies 3 ·
Charges inside conducting sphere
- samjohnny
- · Replies 12 ·
Motion in Two and Three Dimensions
- thegoosegirl42
- · Replies 4 ·
How does time dilation affect the perception of light speed in a moving plane?
- EgpYo
- · Replies 1 ·
Assumption on central forces between two particles
- AllRelative
- · Replies 1 ·
Finding displacement of the string given a function
- Potatochip911
- · Replies 4 ·