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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How Do Forces Change as You Climb a Ladder?
- Inertialforce
- · Replies 3 ·
Magnetic Flux and Faraday's Law
- Kathi201
- · Replies 13 ·
How Is the Force of Friction Calculated for a Block Against a Wall?
- thaixicedxtea
- · Replies 1 ·
Missing Mass: What is the Mass of Block 2 in a System of Three Blocks?
- Sherrylee
- · Replies 2 ·
How do I approach resistors 7-9 and 10-12 in a resistor network?
- Sanctam
- · Replies 3 ·
Why is mercury vapor kept at low pressure in fluorescent tubes?
- marco123
- · Replies 2 ·
How Do You Solve Kirchhoff's Loop Equations for Currents I1, I2, and I3?
- StephenDoty
- · Replies 1 ·
Basic special relativity calculation
- marmoset
- · Replies 6 ·
Two people jumping from a sleigh on frictionless ice
- kky1638
- · Replies 3 ·
Child sliding down incline with kinetic friction
- carljohnston2
- · Replies 5 ·
How Is Torque Calculated on a Hinged Door Due to Its Weight?
- trainumc
- · Replies 1 ·
Angular momentum of a rigid body
- DH214
- · Replies 1 ·
Elastic collision of neon atom problem
- mithanon
- · Replies 1 ·
Find Largest Safe Mass for 3D Force Equilibrium
- Melawrghk
- · Replies 11 ·
Calculating Work Done by Block on Pulley
- DH214
- · Replies 1 ·
How Does a Gust of Wind Affect a Sailboat's Speed and Direction?
- Jennifer001
- · Replies 1 ·
Equations for rotational motion with constant acceleration
- DH214
- · Replies 1 ·
Perfectly inelastic collision problem
- maxdaddy
- · Replies 1 ·
What Is the Maximum Acceleration for a Truck Carrying a Crate?
- kaylanp01
- · Replies 8 ·
Mass of Star HD 179949: 8.77x10^31 kg
- kuahji
- · Replies 1 ·
Finding the Height of a Block Released from a Frictionless Track
- Elbobo
- · Replies 5 ·
Electric field and force from charges at rectangle corners
- soccerdude28
- · Replies 3 ·
Cons. of momentum and cons. of energy
- musicfairy
- · Replies 4 ·
Calculating Velocity and Time of a Horizontal Projectile
- davo
- · Replies 6 ·
Thermodynamically irreversible processes
- loom91
- · Replies 5 ·
Question regarding distance traveled up an incline?
- choyphin
- · Replies 3 ·
How Do You Solve an Off-Center Elastic Collision Problem?
- jromeo
- · Replies 1 ·
Trying to prove that Impulse = change in momentum
- GRB 080319B
- · Replies 5 ·
How Does Resistance Vary with Wire Cross-Sectional Area Changes?
- Sheneron
- · Replies 1 ·
What Is the Maximum EMF Induced in a Vibrating Guitar String?
- Ithryndil
- · Replies 1 ·
How High Can an Object Reach if Projected Upward at 3.7 km/s?
- maniacp08
- · Replies 8 ·
How to Calculate Spring Compression for a Direct Hit in a Projectile Game?
- azure kitsune
- · Replies 3 ·
How to Sketch Electric Fields Around a Charge Distribution?
- soccerdude28
- · Replies 2 ·
Applying Newton's Third Law to Tetherball
- jessica.so
- · Replies 2 ·
What Is the Minimum Mass Difference for Atwood's Machine with Friction?
- xRadio
- · Replies 2 ·
Pulley System: Solving for Acceleration (a3)
- asi123
- · Replies 2 ·
Solve Bobsled Problem: Find How Far Does It Travel Up a 30 Degree Incline
- choyphin
- · Replies 5 ·
Energy carried by Electromagnetic Waves
- Gannon
- · Replies 1 ·
Understanding Acceleration Direction in a Pendulum Swing
- ScullyX51
- · Replies 4 ·
How Does Evaporative Cooling Keep Beverages Cold?
- laksate
- · Replies 4 ·
Friction and Banked road question
- msq126
- · Replies 1 ·
Block sliding down a 25-degree inclined plane
- Toxage
- · Replies 19 ·
What Forces Act on Three Blocks on a Frictionless Surface?
- ScullyX51
- · Replies 1 ·
Coefficient of friction for a shoe sole
- chrispat
- · Replies 1 ·
Solving a Three-Force Member Equilibrium of Particles Question
- Melawrghk
- · Replies 3 ·
How Does Friction Affect the Speed of a Box on Different Surfaces?
- Awwnutz
- · Replies 4 ·
Avoiding Elevator Problems: Solving for Force and Acceleration in an Elevator
- Toxage
- · Replies 2 ·
Solution: Normal Force for Plane Taking Off at 45 Degrees
- Quincy
- · Replies 2 ·
Temperature of panel between two black surfaces at different temperatures
- SEEDS
- · Replies 6 ·
Hat is the coefficient of kinetic friction between the floor and the box
- Nayeli MTZ
- · Replies 4 ·
Why Is v1 Assumed to Be Zero in Bernoulli's Equation for a Large Tank?
- TheCurator
- · Replies 2 ·
Conservation of momentum astronauts question
- cali_sk8er205
- · Replies 2 ·
Find acceleration of this system with friction
- lax1113
- · Replies 2 ·
Angular Momentum (Modern Physics)
- roeb
- · Replies 1 ·
Rotational Dynamics of a solid uniform disk
- rwx1606
- · Replies 5 ·
Why is a1 = 2*a2 in a pulley system?
- asi123
- · Replies 1 ·
Acceleration of M1 in System of Pulleys
- thejinx0r
- · Replies 2 ·
Solving Candle Burn Time Problem with Algebra
- Vuldoraq
- · Replies 2 ·
Conservation of Momentum vs. Energy in sticking collisions
- Tibriel
- · Replies 2 ·
What is the density of an iceberg and how much of it will show in fresh water?
- Vuldoraq
- · Replies 3 ·
Velocity of a particle in a parallel plate, electric field problem
- chem1
- · Replies 1 ·
Making up a question for Hooke's Law based on Calcullus
- bankedroads
- · Replies 4 ·
How Does a Particle Reach Infinity in Finite Time with Angular Force?
- Ertosthnes
- · Replies 3 ·
Derive Angular Momentum in Elliptical Orbit
- psychicist
- · Replies 3 ·
Why Is the Correct Answer for This Lap Time Problem B Instead of A?
- nokia8650
- · Replies 2 ·
Projectile Fired Against Sloped Surface
- CzarValvador
- · Replies 2 ·
Finding the Axle Force on a Pulley System
- needphyshelp
- · Replies 3 ·
Man on movable pulley and block on spring with friction
- EgererI
- · Replies 1 ·
Using the ideal gas law to find pressure after compression and heating
- D4BST3R
- · Replies 2 ·
Gas volume at 20°C to 130°C - Need formula
- D4BST3R
- · Replies 4 ·
Graphing Resistance vs. Bandwidth, why wouldn't go throught the origin?
- crh
- · Replies 3 ·
Friction, circular motion (stupid question)
- robs
- · Replies 1 ·
Block on slop compressing spring.
- tmh88
- · Replies 1 ·
What is the difference between V(rms), V(max) and V(min)?
- Sparkyian
- · Replies 2 ·
Torques: Rotational Equilibrium Mobile
- hi:)
- · Replies 4 ·
What does V(in)=V(max).sin(wt) mean in a DC smoothing circuit?
- Sparkyian
- · Replies 2 ·
Re-arranging a formula to find Vm
- Sparkyian
- · Replies 2 ·
What Is the Speed and Acceleration of a Soccer Ball After a Collision?
- hazex36
- · Replies 1 ·
Why Doesn't the Coil Radius Affect the Induced EMF Calculation?
- Ithryndil
- · Replies 5 ·
Finding Components of Cross Product for Vectors A and B
- angel120
- · Replies 5 ·
Wavelength of light changing from air to water at 0.700c
- Kickbladesama
- · Replies 4 ·
Relativistic Addition of Proton Velocities
- catch-22
- · Replies 2 ·
How Do You Calculate the Net Force on a Satellite in Circular Orbit?
- iluvphys
- · Replies 1 ·
Gravity Problem - Satellite Orbit Calculations
- maniacp08
- · Replies 7 ·
Inertial Reference Frames and Newtons laws
- Blangett
- · Replies 3 ·
What is the velocity of the car
- jammhawk
- · Replies 1 ·
Solving 2kg Fan-Cart Motion: Acceleration, Velocity & Displacement
- jammhawk
- · Replies 1 ·
How Does Charge in a Capacitor Satisfy the Given Differential Equation?
- TFM
- · Replies 67 ·
Golf ball problem (2D Kinematics)
- chudd88
- · Replies 3 ·
Ratio of Space Average Velocity to Time Average Velocity?
- ritwik06
- · Replies 14 ·
How do I graphically add vectors with assigned values and angles?
- glindawantsme
- · Replies 4 ·
Solving for Angle, Momentum & Energy of Particle Collision
- Awwnutz
- · Replies 1 ·
What Is the Maximum Amplitude for SHM Without Slipping?
- kmboling
- · Replies 2 ·
Solving for Coefficient of Friction with 30N Force
- glindawantsme
- · Replies 1 ·
How do I find the maximum compression of a spring?
- lustish
- · Replies 1 ·
Two-pulley system with 10 lb and 5 lb weights: which tensions and systems?
- scipioaffric
- · Replies 1 ·
3 stars in an equilateral triangle
- burianek
- · Replies 1 ·
Marble launched horizontally from spring: why is my answer 1.01 m instead of 0.66 m?
- mickeymouseho
- · Replies 2 ·
Force and distance/velocity/acceleration
- jammhawk
- · Replies 16 ·
Find speeds and energy loss in air hockey puck collision
- Chrisleo13
- · Replies 11 ·