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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Electric Field at the Center of Curvature of a Semicircular Charge Distribution
- ovoleg
- · Replies 6 ·
Viscosity of oil at various temperatures
- nvidia17
- · Replies 1 ·
Collision Question problem with question itself
- GregA
- · Replies 2 ·
Mechanics - Elastic springs and strings
- mr bob
- · Replies 19 ·
Merry-go-round angular velocity and revolutions from constant acceleration
- sauri
- · Replies 3 ·
Calculating Capacitance of Two Isolated Conducting Spheres
- Lisa...
- · Replies 13 ·
Understanding Velocity and Acceleration Formulas: Common Mistakes to Avoid
- mubashirmansoor
- · Replies 2 ·
A shaft of light pass through the prism
- thee
- · Replies 3 ·
Finding spring constant for cannon firing circus performer
- kentus
- · Replies 5 ·
Which Frequencies Are Used in Modern Communication Technologies?
- xhm100
- · Replies 1 ·
Friction coefficient and critical angle
- superdave
- · Replies 3 ·
Headlight Effect: Finding $\phi_0$ on Earth
- kahless2005
- · Replies 1 ·
Understanding Charge Distribution in a Circuit with Multiple Capacitors
- RadiationX
- · Replies 9 ·
Finding acceleration with friction on a tilted pulley system
- rculley1970
- · Replies 10 ·
Calculating Mass of Stars in a Binary System
- chazgurl4life
- · Replies 3 ·
How can I calculate velocity without knowing the time?
- Sesquipedalian
- · Replies 5 ·
What net force is acting on the object along the incline?
- rculley1970
- · Replies 3 ·
Solve Thin-Lens Equation: Prove u=v, Find Focal Length Change
- sci0x
- · Replies 1 ·
Particle Momentum Conservation in a Two-Particle System
- frozen7
- · Replies 4 ·
Energy stored in an extended wire with Young's modulus
- Amith2006
- · Replies 7 ·
Help with inertia, mass, and Newton's laws questions
- ohlhauc1
- · Replies 2 ·
Finding the net force from two forces without mass
- rculley1970
- · Replies 16 ·
Solving Sound Interference: Find Diff. Freq. Destructive Interference
- kahless2005
- · Replies 3 ·
Velocity of Sphere After Collision with Vertical Wall
- vaishakh
- · Replies 5 ·
Why charge and voltage differ for identical capacitors in series vs parallel
- RadiationX
- · Replies 6 ·
SUV and car collision with sliding friction
- N_L_
- · Replies 1 ·
Magnetic forces aon currents and magnetic induction
- abc123
- · Replies 1 ·
Electrical Force and Coulomb's Law
- Trista
- · Replies 2 ·
Powering Homes with 10,000,000 Volts
- niallniall
- · Replies 7 ·
Interference question, thin film
- georgeh
- · Replies 4 ·
Checking three unit conversions to SI units
- badtwistoffate
- · Replies 4 ·
Loop-the-Loop with rotational motion
- nahya
- · Replies 5 ·
Can You Send Electricity Back to UK Grid?
- niallniall
- · Replies 2 ·
How Do You Calculate Air Temperature from Echo Delay and Speed of Sound?
- Moe_slow
- · Replies 2 ·
Overweight Truck Crossing a Bridge
- physicsss
- · Replies 2 ·
Integrating Projectile Motion with Circular Motion and Simple Harmonic Motion
- kentus
- · Replies 8 ·
Projectile motion - no angle given?
- raizen91
- · Replies 2 ·
Cannonball velocity from spring and bungee jumping with spring constant
- kbean5588
- · Replies 2 ·
How Does Acceleration Affect an Astronaut's Apparent Weight Near the Moon?
- N_L_
- · Replies 1 ·
What is the direction of the change in velocity of the ball?
- rachael
- · Replies 2 ·
Increase Ball Velocity with Newton's Laws
- Mozart
- · Replies 5 ·
Gravitational field inside the earth
- jackiefrost
- · Replies 9 ·
How Long Must a Day Be for Weightlessness at the Equator?
- madis
- · Replies 3 ·
Finding submarine depth when boat's sonar velocity estimate is wrong
- motherlovebone
- · Replies 1 ·
How great is the tension of the wire
- gemz
- · Replies 2 ·
Momentum of falling mass problem
- rachael
- · Replies 3 ·
Resonance in Closed Air Coloumn
- SRForum
- · Replies 2 ·
How far up a 10° frictionless ramp does a cart moving at 8 m/s go?
- fizzicks
- · Replies 5 ·
Sound waves and eardrum problem
- thschica
- · Replies 1 ·
Calculate the acceleration of the system
- RedBurns
- · Replies 1 ·
Two equal-mass stars orbiting a central object at 80 km/s
- Eivind
- · Replies 17 ·
Calculate Acceleration of Mass m3 with Non-massless Pulley
- nahya
- · Replies 1 ·
Electricity and magnetism. 2 questions
- Brewer
- · Replies 2 ·
Understanding Cosine Theta in Work Equation
- Roger900
- · Replies 2 ·
Tension in string for accelerating car with hanging ball
- RedBurns
- · Replies 3 ·
How Do You Calculate Train Acceleration and Distance Between Stations?
- John O' Meara
- · Replies 3 ·
Circular motion and water whirl
- JDBB
- · Replies 5 ·
K in Hookes Law vs. Spring Potential Energy
- jeffholmes1
- · Replies 2 ·
Calculating Tension in a Moving String: Is it Possible?
- MrLobster
- · Replies 4 ·
Calculating Coefficient of Kinetic Friction on an Inclined Ramp
- superdave
- · Replies 8 ·
Motorcycle ramp height and hanging masses energy problems
- kfink85
- · Replies 4 ·
Why Is Gravitational Acceleration Least at the Equator and Maximum at the Poles?
- Milind_shyani
- · Replies 8 ·
Minimizing work against friction and gravity on a moving ramp
- mooshasta
- · Replies 6 ·
What Is the Relationship Between Shock Cones and Sonic Booms?
- motherlovebone
- · Replies 3 ·
Solving q(1.204): Charge Flow in Circuits
- Sajjad
- · Replies 3 ·
How Do You Calculate Bicycle Speed and Friction in Circular Motion?
- sauri
- · Replies 1 ·
Oil film color from thin film interference with m*lambda/n2
- truckerron1
- · Replies 5 ·
Speed of Voyager 2 after slingshot encounter?
- atomant
- · Replies 4 ·
Capacitance W/ Dielectric Problem
- minhngo
- · Replies 6 ·
How Does Relative Motion Affect Magnetic and Electric Forces on a Charge?
- Anisotropic Galaxy
- · Replies 1 ·
What Are Shock Cones and How Do They Relate to Mach Numbers?
- motherlovebone
- · Replies 2 ·
Doppler shift for 600nm laser on motorcycle moving at 55m/s
- motherlovebone
- · Replies 3 ·
Calculating Entropy Change in a Diatomic Gas Sample
- SwMarc
- · Replies 3 ·
Effects of Doubling Primary Coil Current on Secondary Coil Induced EMF
- matt85
- · Replies 11 ·
Keplers laws and a hypothetical 1/r^3 dependence
- standardflop
- · Replies 1 ·
Total charge on electrons in water and charge loss in copper penny
- that1grrl
- · Replies 3 ·
Proving ellipse shape of earth orbit?
- adiputra
- · Replies 2 ·
Oil barge sinking with constant leak rate
- fisico
- · Replies 12 ·
Finding Cable Angle and Components of Tension Force in a Rotational System
- lektor
- · Replies 2 ·
Electric Potential in Insulated U-Tube
- PK_Kermit
- · Replies 1 ·
Conservation of Momentum in Inelastic Collisions
- sauri
- · Replies 7 ·
Magnetic flux through a solenoid with 300 turns
- matt85
- · Replies 3 ·
How do charges, fields, and potential relate to each other?
- spank_fusion
- · Replies 4 ·
Finding Normal Force in Diagram
- Hollysmoke
- · Replies 17 ·
Need Feedback on Centripetal Motion Lab Experiment?
- Tido611
- · Replies 1 ·
Finding centre of gravity of a square with a square cut out
- Benny
- · Replies 12 ·
Bulb Temperature using resistance
- hoseA
- · Replies 2 ·
Solve Hard of Hearing Question: Increase dB for Hearing Aid?
- emma123
- · Replies 1 ·
What Are the Unconventional Concepts Behind Mass Spectrometry?
- kentus
- · Replies 2 ·
What is the reaction of the floor of the elevator on the boy?
- rachael
- · Replies 3 ·
Solve a Simple Physics Problem for High School: Pelican and Falling Fish"
- playa007
- · Replies 2 ·
Convert Sun's Radiation Flux Density: 1.64 Langleys/Min - Easy Unit Conversion"
- badtwistoffate
- · Replies 2 ·
Finding distance to wall from echo time without given speed
- emma123
- · Replies 3 ·
How Is Intensity Calculated in a Two-Slit Interference Pattern?
- georgeh
- · Replies 6 ·
Physics book Request (Phy for Sci. and Eng.)
- dekoi
- · Replies 1 ·
Electric fields and electric potential
- Pioneer
- · Replies 2 ·
Why is centripetal force greater than static force in a spring mass experiment?
- Havoc2020
- · Replies 5 ·
Voltage/ electric field question
- donjt81
- · Replies 3 ·
A Block, a speaker and a spring
- Trista
- · Replies 3 ·
Potential difference and Kinetic energy
- donjt81
- · Replies 1 ·