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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Calculating work from E-Field Graphs
- xSnoopy
- · Replies 1 ·
Rod on a pivot: Linear acceleration and reaction forces
- StrawHat
- · Replies 2 ·
Can Green's Theorem Simplify Calculations of Magnetic Force in Uniform Fields?
- schaefera
- · Replies 4 ·
Pressure needed inside an Air Mattress to deflate in given time
- hunnedlicks
- · Replies 2 ·
Classical mechanics, simple pendulum
- xzibition8612
- · Replies 4 ·
Understanding Rotating Coordinate Systems: A Visual Approach
- xzibition8612
- · Replies 2 ·
Calculating Heat Flow Ratio of Two Water Tanks
- 5carola5
- · Replies 7 ·
How much charge would the Earth and Sun need to knock the Earth out of orbit
- g.lemaitre
- · Replies 5 ·
Why does a helicopter blade have torque if the force acts at the pivot point?
- 06mangro
- · Replies 7 ·
Cyclist motion: position, velocity and acceleration graphs
- alicia113
- · Replies 2 ·
Tension between 3 blocks of equal mass
- Justinmcg67
- · Replies 4 ·
Which atoms have lower binding energies than iron?
- zabachi
- · Replies 2 ·
Finding resistor's voltage with current and voltage sources present
- JJBladester
- · Replies 5 ·
Why Did My Calculation of Driving Speed Result in an Error?
- Manodesi524
- · Replies 4 ·
Conceptual Question on Parallel Plate Capacitors
- waters
- · Replies 3 ·
Calculating Rotational Energy of a System with Three Masses and an Impulse
- LindaNguyen
- · Replies 7 ·
Work Energy Method for Rotational Motion
- freshbox
- · Replies 6 ·
Physics topics for A2 coursework on helicopters
- 06mangro
- · Replies 2 ·
Downhill to uphill roller coaster velocities on a bike
- ErikMM
- · Replies 1 ·
Box falling off accelerating truck after 3 seconds
- Drstevebrule
- · Replies 4 ·
How to draw a phasor addition on AC circuit?
- maali5
- · Replies 1 ·
Operational Amplifier Output Voltage with Equal Resistors
- Femme_physics
- · Replies 13 ·
Using Gauss' law to find charge on a sphere
- box543
- · Replies 1 ·
Electric field of an infinite sheet of charge.
- SayWhat1
- · Replies 12 ·
Kinematics - Acceleration equation confustion
- help1please
- · Replies 7 ·
Calculating Time of Impact of Pendulum Bob on Cylindrical Bar
- grzz
- · Replies 2 ·
Misunderstanding in converting atomic weight to kg (s.state physics)?
- naftali
- · Replies 7 ·
RLC Circuit: Calculating Current I(ω)
- VictorWutang
- · Replies 5 ·
Why 10V Between Every Point in Circuit Diagram?
- goomer
- · Replies 4 ·
Linear charge density (what equation?)
- box543
- · Replies 3 ·
Maximum Height for Hanging Mass on a Stretched Wire
- Catchfire
- · Replies 9 ·
Oscillations in an electric field
- evangoor
- · Replies 1 ·
Physics, Net force and Acceleration
- vrack
- · Replies 1 ·
Gravitational potential energy datum in rotational motion problem
- freshbox
- · Replies 22 ·
What Is the Specific Heat Capacity of the Liquid in This Thermodynamics Problem?
- dobedobedo
- · Replies 3 ·
Time for block B to stop after collision with ball A
- danyalasdf
- · Replies 3 ·
How to Round Answers with Significant Figures for Weights in Physics
- fojkehelky
- · Replies 7 ·
Introductory rotational dynamics/energy conservation question
- kinslow31
- · Replies 4 ·
Heat transfer in a cylindrical tube
- 5carola5
- · Replies 2 ·
Magnitude of the charge on the oil drop
- bphy
- · Replies 1 ·
Resistivity of conducting putty?
- Navras
- · Replies 1 ·
Photoelectric Effect - Variables
- Pinchy444
- · Replies 4 ·
Minimum force to push a wheel over a block of height h
- PrestonBlake
- · Replies 8 ·
Sound intensity, given frequencies
- Radian
- · Replies 1 ·
Reflected and transmitted pulse height and width at string boundary
- Ted1508
- · Replies 1 ·
Energy stored in 10 m of coaxial cable with mylar dielectric
- Winzer
- · Replies 6 ·
Projectile Motion: Initial Speed and Maximum Height Calculations
- john stewart
- · Replies 4 ·
Soccer ball velocity at 0.25s and 0.5s after being kicked at 25°
- john stewart
- · Replies 2 ·
Finding the voltage in a non- series/parallel circuit
- JJBladester
- · Replies 6 ·
Two Conceptual questions about rotational mechanics
- babayevdavid
- · Replies 1 ·
Derivation of area of trajectory of projectile
- Quantum Mind
- · Replies 5 ·
Velocity,average velicity,distance
- john stewart
- · Replies 3 ·
Resolving Multiloop Circuit Configurations with Delta Star Transformation
- nanotubez
- · Replies 5 ·
Finding tow rope angle from work and tension for plane and water skier
- songoku
- · Replies 3 ·
Why are different equations giving me different answers?
- Bananahammock
- · Replies 2 ·
Velocity changes when force applied perpendicular
- asmnath
- · Replies 1 ·
How to Solve an Increasing RC Circuit with Changing Resistance and Capacitance?
- T.smriti
- · Replies 2 ·
Weight of system: water container and rock
- physickkksss
- · Replies 4 ·
How to Decide Centripetal Forces
- kuikaili
- · Replies 5 ·
Force on charge and electric field question
- XodoX
- · Replies 3 ·
Impulse-steel ball dropped on steel slab
- herbally
- · Replies 4 ·
How can an object be pulled upward with an acceleration less than gravity?
- Bashyboy
- · Replies 2 ·
What is the length of the primitive cell for sodium with a BCC structure?
- fluidistic
- · Replies 24 ·
Formula for average current on a coil inside a solenoid
- starthorn
- · Replies 2 ·
Red Shift and Receding Galaxies
- Peter G.
- · Replies 3 ·
How Does Doubling the Current Affect the Compass Needle's Deflection Angle?
- IIK*JII
- · Replies 1 ·
I to find the distance of the freefalling objects when one hits the ground.
- Purpplehaze
- · Replies 16 ·
Velocity of two insulating charged spheres at collision
- intemk9
- · Replies 3 ·
Object travels 22.5 m in the eighth second with uniform acceleration
- einstein101
- · Replies 10 ·
Having a hard time solving equation for mass of planet
- lancel916
- · Replies 8 ·
Calculate lens diameter using NA
- Lanc1988
- · Replies 1 ·
Electric field question involving 4 charges on a square
- joshjohns
- · Replies 6 ·
Non Uniform Acceleration as a function of distance and not time
- ayloedxa
- · Replies 27 ·
What is the total binding energy in MeV/c2 for N-14?
- hattrick72
- · Replies 2 ·
A tree and a mirror on the ground
- sklotz
- · Replies 2 ·
RL circuit time constant with 0.2 H inductor and 330 Ω resistor
- smell5
- · Replies 10 ·
Calculating Power from Mass, Speed and Height - 250W
- roovid
- · Replies 10 ·
Solving for v1 in Bernoulli's equation with v1 on both sides
- NRasmus1
- · Replies 4 ·
Diverging lens problem? finding focal length
- snash1057
- · Replies 5 ·
Having trouble figuring center of mass between Sun and Jupiter
- lancel916
- · Replies 6 ·
How Do You Calculate Torque and Angular Momentum in a Conical Pendulum?
- carl87
- · Replies 4 ·
What is the conservation of energy problem involving h and v?
- Karhitect
- · Replies 4 ·
Why do broken circuit ends show + and - instead of being neutral?
- goomer
- · Replies 5 ·
Batman swinging on grappling hook and sliding with friction
- Karhitect
- · Replies 14 ·
Explanation of how the following calculus work
- maali5
- · Replies 6 ·
Rearranging period of pendulum equation to find length
- Adam17
- · Replies 3 ·
Potential difference between two large plate changing with time
- AGNuke
- · Replies 2 ·
Spring-launched foam pellet velocity
- Adam17
- · Replies 11 ·
Voltage across a bulb affects power output
- gracep
- · Replies 2 ·
Calculating Minimum Distance of Approach for Charged Particles
- AGNuke
- · Replies 2 ·
Determining final temperature, pressure and work done
- nombusoz
- · Replies 4 ·
Speed of sound in water at 16 degrees celsius
- lavster
- · Replies 1 ·
Block sliding down incline with friction gives negative kinetic energy
- freshbox
- · Replies 26 ·
Highschool Question on Thermal Equilibrium
- chris1
- · Replies 3 ·
Object 3.5 cm from lens with magnification +0.667
- alicia113
- · Replies 14 ·
Ball in vertical circle: find speed 30 degrees below horizontal
- Adam17
- · Replies 6 ·
Work needed to move a point charge
- TrpnBils
- · Replies 1 ·
Internal Energy of an Isovolumetric Process
- Astrogirl93
- · Replies 4 ·
What is the Motion of a Bifilar Pendulum?
- joelKID984
- · Replies 4 ·