Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Why Does the Water Bend Towards the Comb and Not Away?
- Kyoma
- · Replies 5 ·
Electric Field on finite charged rod
- n0va
- · Replies 4 ·
How Long Does It Take for an Electron to Return to Its Initial Height?
- Leeoku
- · Replies 4 ·
Momentum - Hit and stick problem solving
- AceInfinity
- · Replies 10 ·
Why Does the Ball Leave the Tray at a Different Time Than Expected?
- Punkyc7
- · Replies 17 ·
A problem with significant figures
- Richlair
- · Replies 3 ·
Magnetic Field Mass Spectrometer Calculations
- AceInfinity
- · Replies 8 ·
Work and Energy with 2 variables
- zenophysics
- · Replies 4 ·
Need help with Quantinization of Charge concept and calculations
- AceInfinity
- · Replies 13 ·
What Happens to Percent Error as the Number of Vectors Increases?
- un_cooled
- · Replies 1 ·
Magnetic Field Strength Calculation for a Solenoid with Given Parameters
- sphys4
- · Replies 1 ·
Ice block on inclined plane- easy problem
- cep
- · Replies 2 ·
How Many Atoms and What Mass Result from an Electrical Current in Zinc?
- 314pi
- · Replies 1 ·
Question on momentum, impulse, and collisions
- Kalix
- · Replies 9 ·
How Do You Calculate the Distance Between Two Stars in a Binary System?
- kraigandrews
- · Replies 4 ·
Charge inside conducting shell
- Shukie
- · Replies 19 ·
Gravity interaction is possible between
- silent10
- · Replies 3 ·
Infinite lines of charge, Gauss' Law
- jumbalaya
- · Replies 4 ·
Calculating Crane Height from Angles
- Cbray
- · Replies 1 ·
I am back on intro physics forum Question on springs
- flyingpig
- · Replies 14 ·
How can equilibrium of a rigid body be determined using the given information?
- FearOfFM
- · Replies 5 ·
Special relativity - photograph of a moving meter stick
- Elemc
- · Replies 24 ·
How to Find Force F on a Boat with Given Forces and Motion?
- PandaBoy
- · Replies 4 ·
[Equilibrium and Pendulums] Do I have to consider the Perpendicular force?
- AJKing
- · Replies 5 ·
Statics - I think I found a mistake in the solution manual - need confirmation
- Femme_physics
- · Replies 3 ·
Rescue Plane: Release Angle of 57.3°
- stupif
- · Replies 10 ·
Conservation of mechanical energy (no friction) - doesn't work in this case?
- Femme_physics
- · Replies 28 ·
Estimating Maximum Ranges of Ammunition for Tabletop War Games
- Twit42
- · Replies 2 ·
A lens and a convex mirror problem
- zimo
- · Replies 3 ·
Kinetic Energy and Potential Energy
- gkangelexa
- · Replies 7 ·
Pressure/Volume question. A2 Physics
- RSG_9
- · Replies 2 ·
How Do You Calculate the Damping Constant of a Hard-Boiled Egg on a Spring?
- Punkyc7
- · Replies 6 ·
Solving Horizontal Beam & Cable System: F, W & T1, T2
- Femme_physics
- · Replies 7 ·
Some Problem Related to Position vs Time Graph
- shubham.bali7
- · Replies 3 ·
Isothermal compression vs thermally isolated compression
- balibone
- · Replies 2 ·
What is the acceleration needed to prevent block A from sliding down the cart?
- maff is tuff
- · Replies 8 ·
Solving Ampere's Law Trouble: My Mistake in Calculating B?
- giladsof
- · Replies 4 ·
Conservation of Energy speed of block
- himetx
- · Replies 3 ·
Show that the acceleration of the system is upward
- cremelatte
- · Replies 8 ·
What does this value represent in this work question?
- AJKing
- · Replies 1 ·
Circuit problem: Will the fuse blow out?
- joej24
- · Replies 9 ·
Ampere's Law vs Biot-Savart arouns a Square
- teroenza
- · Replies 4 ·
Inability to calculate kinetic energy if I use SI units
- ErikMBrewer
- · Replies 6 ·
Number of decayed atoms in a simultaneous decay process
- mike_M
- · Replies 2 ·
Finding Maximum Altitude of a Rocket
- stupif
- · Replies 41 ·
What Is the Bird's Speed After Swallowing the Insect?
- jeeves_17
- · Replies 4 ·
Separation distance between wires - Magnetic fields
- SimonSays
- · Replies 3 ·
Power of a man cycling up a hill.
- AJKing
- · Replies 2 ·
Shockwave Question: Solving Mach 3 Plane 20Km Above Person
- AriAstronomer
- · Replies 1 ·
Understanding the Forces Acting on a Skier During Acceleration
- PCSL
- · Replies 6 ·
Rotational Motion/Projectile motion of a ball on a circular ramp.
- andorrak
- · Replies 21 ·
Calculating Energy Dissipation in a Rectangular Coil with Time-Varying Current
- arl146
- · Replies 17 ·
Two lenses problem, multiple interpretations, no true answer
- zimo
- · Replies 1 ·
How Do Pressure and Impurities Affect Water's Melting and Boiling Points?
- KoalaPowa
- · Replies 3 ·
Revising simple lenses - magnified, and diminished images
- RK1992
- · Replies 1 ·
Force Experienced by Charges between Parallel Plates
- Kratos321
- · Replies 1 ·
Really general question regarding basic Momentum
- AJKing
- · Replies 3 ·
Solving the Last 3/4 of a Second Fall: Can You Do It in 3 Minutes?
- 314pi
- · Replies 5 ·
What is the effect of adding ore to a coasting ore cart on its kinetic energy?
- AJKing
- · Replies 2 ·
Cars colliding into each other.
- kraigandrews
- · Replies 7 ·
Registering for USAPhO Exam Without a Teacher
- jli10
- · Replies 2 ·
How Do You Calculate the Velocity of a Rocket Facing Air Resistance Over Time?
- kraigandrews
- · Replies 4 ·
Proving Preserved Temporal Order of Cause and Effect
- omoplata
- · Replies 5 ·
Increasing Torque, Force, and Work: Increasing crank Length (L)
- Femme37706
- · Replies 3 ·
Where did pi^2 go in this QM j/eV unit conversion?
- timn
- · Replies 5 ·
Calculating Amplitude for Different String Gauges in Guitar Tuning
- kevin36
- · Replies 11 ·
Zero Normal force during uniform circular motion?
- soominds
- · Replies 1 ·
The conservation of momentum in 2D
- Dakkers
- · Replies 1 ·
Problem dealing with Equilibrium & Torque
- joshncsu
- · Replies 4 ·
Speed of sound, frames of reference
- saccapella
- · Replies 8 ·
Find the magnitude of resultant of OA, OB and OC.
- devvaibhav
- · Replies 6 ·
Understanding Forces and Electric Potential
- Shaunzio
- · Replies 1 ·
How Does a Spring's Compression Relate to Impact Velocity?
- Femme_physics
- · Replies 15 ·
Normal force acting on a ladder lying against a wall
- starwars32
- · Replies 13 ·
Understanding Source Differentiation in Sound Wave Superposition
- pkc111
- · Replies 4 ·
What Determines the Peak Angular Speed of a Rotating Cylinder?
- menglish20
- · Replies 5 ·
Solving Tensions and Reaction Forces of Pole AB
- Femme_physics
- · Replies 12 ·
Instantaneous velocity question?
- Saitama
- · Replies 10 ·
Classical physics (phase diagram
- dirac1902
- · Replies 2 ·
What is the new distance between the rope and the Earth?
- Punkyc7
- · Replies 4 ·
Rotational Motion of a car on a curve
- ajmCane22
- · Replies 3 ·
Question on force and simultaneous equations
- Kalix
- · Replies 8 ·
Free body diagram of atwood machine
- Shukie
- · Replies 7 ·
Question about electric potential energy - need confirmation
- Kelvin
- · Replies 1 ·
Rocket ascending in Earth's gravity
- kraigandrews
- · Replies 1 ·
HELP!Understanding Resistance Calculations in Series Circuits with Light Bulbs
- GT1981
- · Replies 10 ·
What is the Force on Charge B Due to Charges A and C?
- euphoriax
- · Replies 1 ·
Answer: Tire Pressure: 35psi | Actual Pressure: 50.868psi
- NDbogan
- · Replies 1 ·
What is the Initial Speed Formula for a Ballistic Pendulum?
- dandirom
- · Replies 13 ·
Air is a real substance for year 8 class
- NDbogan
- · Replies 2 ·
Simple Pendulum Problem: Finding Coefficient of Linear Expansion
- amal
- · Replies 2 ·
Energy of Falling Dominoes - Rotational and Gravitational
- SaminS
- · Replies 3 ·
Will These Two Planes Collide?
- Femme_physics
- · Replies 24 ·
Converting Complex Impedance to Euler Form: Is it Applicable to Just Cos?
- wateveriam
- · Replies 6 ·
How to find current through resistors.
- sphys4
- · Replies 1 ·
Calculating Resistivity: Finding the Area of a Wire
- sphys4
- · Replies 1 ·
Gravitational Potential Energy: Two Neutron Stars
- ArticMage
- · Replies 3 ·
Solving Spring Tray Problem: Height Above Point A When Ball Leaves Tray
- Punkyc7
- · Replies 1 ·
Beginning physics question about solving for time using kinematic equations?
- JohnApplebee
- · Replies 2 ·
Calculating the Efficiency of a Reversible Refrigerator
- ajmCane22
- · Replies 4 ·