Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Where is the maximum speed of a vibrating string?
- msimard8
- · Replies 4 ·
How Much Heat Does a 60W Bulb Transfer to Air by Natural Convection?
- bill nye scienceguy!
- · Replies 1 ·
Can Relativity Explain the Changing Size of Babylon 5 Space Station?
- wowolala
- · Replies 3 ·
Solve Time Dilation: Get 24hr Solution in 105hrs
- EngageEngage
- · Replies 2 ·
Calculate the sprinters average acceleration
- jeahomgrajan
- · Replies 5 ·
Finding aperture width from point source light geometry
- BuBbLeS01
- · Replies 2 ·
How does capacitance and resistance affect charge time in RC circuits?
- zvee_y
- · Replies 2 ·
Calculate Momentum/KE Transfer in Neutron-Boron Collision
- richylai
- · Replies 6 ·
Ultracentrifuge Angular Speed Calculation
- richylai
- · Replies 10 ·
How to Write Formulas in Physics Forums
- horsegirl09
- · Replies 5 ·
Angular velocity and energy lost due to friction
- mossman
- · Replies 2 ·
Finding orbital velocity and period for weightlessness at Earth's equator
- starvinmarvin
- · Replies 1 ·
Mass of earth to use in calculation?
- jillz
- · Replies 2 ·
What Speed Keeps Theme Park Ride Cars on Track?
- Batman1
- · Replies 15 ·
I am having some trouble with conservation of energy
- kyin01
- · Replies 1 ·
Capacitance vs. Distance of separation
- Heat
- · Replies 3 ·
Helium balloon rises to lower pressure altitude
- Ginerva123
- · Replies 1 ·
Swinging physics teacher problem
- leaf345
- · Replies 6 ·
2 focal points, find image distance.
- rcmango
- · Replies 2 ·
Calculating Focal Length for Presbyopia Glasses
- jeahomgrajan
- · Replies 16 ·
Motion of a particle along a curve under gravity
- PhysiSmo
- · Replies 30 ·
A question on The Focal-Length of a Lens
- cbs27
- · Replies 1 ·
Spring Force and Restoring Motion on XY Plane
- yasar1967
- · Replies 11 ·
What Is the Area of This Complex Shape?
- p3rf3ct4u
- · Replies 1 ·
Archemedes Principle: Water Level Impact Analysis
- physicsfan01
- · Replies 4 ·
Plank on ground and frictionless roller at wall angle 59°
- Natbird
- · Replies 21 ·
Simplify boolean expressions and implement with logic gates
- pli777
- · Replies 1 ·
Net work on plane diving and climbing with given thrust and weight
- klopez
- · Replies 1 ·
Mutual Induction - Transformers
- BoroBoy
- · Replies 3 ·
How to Find the Inductance of a Long Solenoid?
- ttiger2k7
- · Replies 2 ·
Questions about circular motion/ centripetal acceleration/force
- brittylaurel
- · Replies 5 ·
How Is the Work Function of Silver Determined from Cut-off Wavelength?
- Jas014
- · Replies 3 ·
How does an ideal gas temperature change when it goes through a cycle?
- ~christina~
- · Replies 15 ·
How Much Volume Does an Iron Anchor Displace in Water?
- A_lilah
- · Replies 1 ·
How Do You Calculate the Slit Spacing in a Double-Slit Experiment?
- BuBbLeS01
- · Replies 2 ·
Calculating Diffraction Orders for a 513 line/mm Grating
- BuBbLeS01
- · Replies 3 ·
Does a hole in steel shrink when heated?
- sovankc
- · Replies 3 ·
How Do You Calculate the Width of a Slit in a Diffraction Experiment?
- BuBbLeS01
- · Replies 2 ·
Optics Question Solved: Image Location and Size of Robin in Convex Mirror
- raynor462
- · Replies 2 ·
Archimedes principle problem? *1 fluid, 1 solid*
- jrrodri7
- · Replies 2 ·
What is the difference in height between two liquids in a U-tube?
- jrrodri7
- · Replies 5 ·
Radius of proton motion in Magnetic field
- gills
- · Replies 5 ·
Calculate Electric Field at Point .033 cm from q2
- sachemeast
- · Replies 5 ·
Position vector and velocity vector
- chocolatelover
- · Replies 8 ·
Current in a wire perpendicular to Earth's magnetic field
- BrooklynBees
- · Replies 1 ·
Can Machine Gun Bullets Propel a Vehicle to Required Speeds?
- bcjochim07
- · Replies 2 ·
Moment of Inertia and pivot joint
- glasshut137
- · Replies 3 ·
Beam selection for footbridge with distributed load and self-weight
- danago
- · Replies 4 ·
Calculating Latent Heat of Water Vaporization
- series111
- · Replies 1 ·
Circuits: Power, Voltage, Resistance
- barnaby
- · Replies 3 ·
Simple velocity vector problem; IS MY SOLUTION MANUAL WRONG OR AM I?
- HelpMeWIN123
- · Replies 14 ·
Special Relativity, accelerating frames, proper time
- iamaelephant
- · Replies 3 ·
Motion with two constant acceleration phases
- madahmad1
- · Replies 3 ·
Car with linearly decreasing speed, finding distance when acceleration is −10 m/s²
- madahmad1
- · Replies 6 ·
How High Does the Tennis Ball Rebound After Elastic Collision?
- elkedoring
- · Replies 2 ·
Confusing System of Masses Question
- Keeo
- · Replies 3 ·
Thin film interference with phase changes at reflections
- BuBbLeS01
- · Replies 2 ·
How Does the Sun's Gravitational Pull on the Moon Compare to Earth's?
- girl_saint86
- · Replies 1 ·
Finding direction of acceleration vector from component
- HelpMeWIN123
- · Replies 1 ·
Binary star system and Apparent magnatudes
- AstroPhys
- · Replies 10 ·
Show that the energy of a charged conducting sphere in vacuum is kq²/(2R)
- jennyyyy
- · Replies 3 ·
Calculating the electric field from the potential
- paralian
- · Replies 5 ·
Find Resistance Between A and B - 5.0Ω, 98.0Ω, 16.0Ω
- n77ler
- · Replies 11 ·
Power of a Pump draining a flooded basement
- physicsfan01
- · Replies 2 ·
Solve 2D Motion Problem: Initial Velocity 8.40m/s, Angle 17°
- chocolatelover
- · Replies 2 ·
Find the magnitude and sign of the point charge at the origin
- bastige
- · Replies 1 ·
What Are the Directional Angles for Electric Forces in an Equilateral Triangle?
- Bensky
- · Replies 2 ·
How does the right-hand rule for cross products work?
- elephantorz
- · Replies 3 ·
Total vector displacement from three legs of travel
- HelpMeWIN123
- · Replies 4 ·
Raindrops striking car - find impulse
- nemesis08
- · Replies 1 ·
How Much Heat Does a Weightlifter Produce in a Lift?
- chukie
- · Replies 1 ·
What is the efficiency of a solar collector made of an aluminium canister?
- johnboy11
- · Replies 4 ·
Electronics converting sine waves to current
- Amy54
- · Replies 2 ·
Calculating Forces and Work in a Radon Gas Transmutation
- ~christina~
- · Replies 10 ·
Finding the direction of the resultant vector of three vectors?
- HelpMeWIN123
- · Replies 10 ·
What is the net force on a weather rocket during its flight?
- bcjochim07
- · Replies 2 ·
Falling coffee mug, time of descent
- chocolatelover
- · Replies 3 ·
Do exploding bodies gain the same kinetic energy?
- wudingbin
- · Replies 6 ·
Why Do Signs Matter in Calculating Forces Between Charges?
- Bensky
- · Replies 6 ·
What Causes the Unique Shadows and Light Effects of Water Striders?
- zachcumer
- · Replies 5 ·
Electric Field problem Is my math wrong or am I doing something else wrong?
- Bensky
- · Replies 6 ·
Is a reversible isothermal process truly without energy change?
- chukie
- · Replies 1 ·
Solve Momentum Problem: Find Ball Velocities
- Sheneron
- · Replies 2 ·
Why Do Dynamic and Static Methods Yield Different Tension Results?
- ys2050
- · Replies 13 ·
What is the electron and beta rays?
- samar
- · Replies 6 ·
Magnetic field curvature question
- jalen
- · Replies 1 ·
How to expand (Pi + mc - Pf)² in Compton scattering
- xinlan
- · Replies 11 ·
Resistance between points A and B with three resistors
- n77ler
- · Replies 5 ·
How can I calculate the electric field and force between two charged rods?
- Nasserz
- · Replies 6 ·
Conservation of momentum astronaut problem
- pureouchies4717
- · Replies 1 ·
Calculate Power Absorbed by Each Element in Circuit
- steven10137
- · Replies 1 ·
Block on spring must reach position 0.080m away with angular frequency 7.0 rad/s
- porsche9173
- · Replies 3 ·
What Are Heavy, Light, and Split-Off Bands in Bandstructure?
- Defennder
- · Replies 0 ·
Barrier tunneling - Intro to QM
- Defennder
- · Replies 13 ·
Rotational Energy and Moment of Inertia of a nitrogen molecule
- Zacthor
- · Replies 1 ·
Find n of a mass confined between 2 rigid walls?
- iafatel
- · Replies 1 ·
Parallel capacitor problem with electrons and positrons in special relativity
- elephantorz
- · Replies 11 ·
What Motor Power is Needed to Move a Cylinder Drum?
- zexonsmart
- · Replies 2 ·
Solving Energy & Work Homework Problems
- AntonySpeech
- · Replies 12 ·
Electric Field of +4.0*10^-9 C in 1600 N/C Field
- Expresso
- · Replies 3 ·