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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Pulley problem, acceleration, angular velocity, inertia
- J-dizzal
- · Replies 49 ·
Rotational inertial and energy.
- J-dizzal
- · Replies 7 ·
Solving Three Ball Collision: Elastic Collision with M and m Masses
- momo1111
- · Replies 3 ·
Find Friction Force of Box with Mass of 135 kg at 35° Angle
- DaDoctor
- · Replies 8 ·
Ball rolling up a ramp with friction -- Find max height (Unsolved)
- srmico
- · Replies 33 ·
Finding ##R_1## & ##R_2## in Series Circuit
- kaspis245
- · Replies 4 ·
Acceleration of a point on square
- Tanya Sharma
- · Replies 4 ·
Calculate the average speed and average velocity
- AHashemi
- · Replies 2 ·
Finding magnitude of electrical field at specific point
- plshlp1224
- · Replies 1 ·
Moment of inertia of a non-homogenous cylinder
- Karol
- · Replies 2 ·
Figuring out the magnitude of electric repulsion
- plshlp1224
- · Replies 1 ·
Errors in basic current balance experiment?
- Ng Sio Hong
- · Replies 2 ·
Moments of inertia of a rectangular plate
- Karol
- · Replies 5 ·
How is the Barrel Length of a Human Cannon Calculated?
- Mary1910
- · Replies 3 ·
Power dissipated in R2 with non-ideal battery and internal resistance
- kjlchem
- · Replies 6 ·
Electric field outside of a cavity
- Domenico94
- · Replies 2 ·
Rotating a mass horizontally to raise a mass vertically
- Ocata
- · Replies 1 ·
How Do You Calculate the Moment of Inertia for Different Axes in a Cube?
- Karol
- · Replies 17 ·
De Broglie wavelength of an atom
- Molar
- · Replies 2 ·
Pulley -- Solving for an unknown mass
- Ocata
- · Replies 11 ·
Negative zero error in vernier calipers
- quietrain
- · Replies 2 ·
Opposing forces on objects in motion
- Jimmy87
- · Replies 8 ·
Making Momentum Chart and Finding Force for Baseball and Bat
- Kianaaaaa
- · Replies 3 ·
Nonrelativistic de Broglie energy Threshold of 1%
- Feynman.12
- · Replies 7 ·
Apparent weight of a man standing in an elevator
- Tavon
- · Replies 24 ·
Solve Kinematics Problem: Find θ for sx = symax
- FredericChopin
- · Replies 2 ·
Determine the angle through which the moving charge is deflected.
- erisedk
- · Replies 6 ·
Rod rotating, falling and hitting a mass
- Karol
- · Replies 16 ·
Electric Field and minimum velocity
- erisedk
- · Replies 2 ·
Hooke's and Newton's law to find Second order ODE
- Remixex
- · Replies 10 ·
How Do Forces Act on Adjacent Links in a Chain with Applied Acceleration?
- oreo
- · Replies 6 ·
How Much Energy Does an Electron Retain from Blue-Green Light?
- Marcus James
- · Replies 3 ·
Optimal angle for a projectile from height h
- RMalayappan
- · Replies 7 ·
Force and Velocity to find Mass (via soccer)
- Physkat
- · Replies 10 ·
Distance of particle drop in magnetic field (probably geometry)
- pollytheparrot
- · Replies 20 ·
Force of an electromagnet question
- radaballer
- · Replies 2 ·
Find Acceleration of Wedge with Rope Pulled by Constant Force T
- Vibhor
- · Replies 3 ·
Minimum value of V_0 for Odd Solutions in Square Well Potential
- Dazed&Confused
- · Replies 2 ·
Applying Relative Motion to One Dimensional Motion Equations
- Better WOrld
- · Replies 1 ·
Momentum/Kinematics (Contest Question).
- Ethan_Tab
- · Replies 8 ·
Why do waves only interfere along XY and not along RS?
- toforfiltum
- · Replies 4 ·
Heat transfer coeffcient expression
- Sahil Dev
- · Replies 3 ·
Shortest time to cross a river: aim upstream, across, or downstream?
- isthistakenyet
- · Replies 13 ·
Atwood's Machine. I am asked to solve for the unknown mass.
- Ocata
- · Replies 2 ·
When do I use L = mvr vs L = Iω for angular momentum?
- Sarah00
- · Replies 24 ·
Particle on inclined plane whose steepness is increasing
- Adam Johnson
- · Replies 4 ·
A coil of 25 turns of wire is suspended by a thread
- Astraithious
- · Replies 2 ·
Curie's Law and 3rd Law of Thermodynamics
- pitbull
- · Replies 1 ·
Proving magnitude of impulse on either spheres
- toforfiltum
- · Replies 7 ·
What are the products of β+ and β- decay for an unstable parent nucleus?
- mss90
- · Replies 3 ·
Fizeau's Exp: Calculating Speed of Light w/ Red Laser
- Kryptuniite
- · Replies 9 ·
How to maintain the same stationary wave pattern?
- toforfiltum
- · Replies 4 ·
Why is My Young's Modulus Calculation Giving a Different Result?
- toforfiltum
- · Replies 4 ·
Discrepancy with Normal Force Problems
- Physkat
- · Replies 2 ·
Calculating Displacement: Understanding Vectors in Physics
- Said90
- · Replies 5 ·
Using Torque to Prevent Cranes from Falling Over
- Emily Arden
- · Replies 1 ·
How Does Wire Length Affect Voltage in an Electrical Circuit?
- polekitten
- · Replies 2 ·
What is the Tension in the Wire for a Mass Pulled on a Rotating Disc?
- Karol
- · Replies 22 ·
Maximum speed of a mass on a spring
- Mary1910
- · Replies 6 ·
One dimensional inelastic collision; bullet through block.
- J-dizzal
- · Replies 9 ·
Calculating linear expansion of windshield 60cm*150cm
- **Mariam**
- · Replies 1 ·
Center of mass project exploding at max height
- J-dizzal
- · Replies 8 ·
Adiabatic compression of bicycle tire: volume, work, and temperature
- Edge Of Pain
- · Replies 8 ·
Resultant of 3 vectors along the sides of an equilateral triangle
- cr7einstein
- · Replies 6 ·
Center of mass of two connected different density blocks
- J-dizzal
- · Replies 8 ·
Find inequality for coefficient of restituition
- toforfiltum
- · Replies 21 ·
Time needed to half a volume of liquid
- DavideGenoa
- · Replies 4 ·
Simple Harmonic Motion of a 12kg mass
- Mary1910
- · Replies 12 ·
Falling elevator onto a spring.
- J-dizzal
- · Replies 47 ·
Potential energy curve, turning points
- J-dizzal
- · Replies 1 ·
PE and KE, mass sliding down incline into a spring (no friction)
- J-dizzal
- · Replies 9 ·
Does isothermal expansion of an ideal gas violate Kelvin-Planck?
- pitbull
- · Replies 1 ·
Understanding Relative Velocity of Runners Moving in Opposite Directions
- samisoccer9
- · Replies 1 ·
Distance between two 75 nC point charges with 1 N force
- snowjoe
- · Replies 19 ·
Simple kinematics question -- dropping a stone down a well
- Mr Davis 97
- · Replies 1 ·
Electrical power generated by wind turbine
- toforfiltum
- · Replies 11 ·
Is linear acceleration the same as tangential acceleration?
- Sarah00
- · Replies 18 ·
Impulse problem: how can these two angles be different?
- kostoglotov
- · Replies 2 ·
Relative motion in an elevator
- Ravens Fan
- · Replies 5 ·
Finding Maximum Spring Compression in Projectile Collision with Target
- Fernando PJ
- · Replies 3 ·
At what distance does a seaplane's boundary layer transition to turbulence?
- Brian T
- · Replies 1 ·
Force of Friction: Stopping 1,000kg Car at .8 Coeff.
- PhysxMakesMeCry
- · Replies 2 ·
Why do two textbooks have conflicting equations for the harmonic wave equation?
- SuperSpasm
- · Replies 2 ·
Rotational Inertia of a triangle
- rpthomps
- · Replies 3 ·
Motion along a straight line (Finding acceleration).
- Sarah Sposato
- · Replies 3 ·
Mass not sliding on a smooth, accelerating base
- Karol
- · Replies 3 ·
Finding the Weight and Torque of a Beam in Balance
- Jackie Treehorn
- · Replies 10 ·
Energy & Momentum Homework: Frictionless Roller Coaster from A-E
- Mary1910
- · Replies 7 ·
How Many Slits Are in the Stroboscope for Ripple Tank Waves?
- Volcano
- · Replies 13 ·
Why use bottom of ball instead of center of gravity for kinetic energy
- toforfiltum
- · Replies 4 ·
Electric Force and Work Question
- erisedk
- · Replies 6 ·
Rotational Motion Final Angular Speed Calculation
- rpthomps
- · Replies 2 ·
Scaling up the nucleus to the size of a pin.
- takando12
- · Replies 12 ·
How Does Force Direction Affect Rotation in Physics Problems?
- goldfish9776
- · Replies 7 ·
Question on relative velocity (High school motion)
- KVS1999
- · Replies 1 ·
Why is acceleration downward in projectile motion?
- Sarah00
- · Replies 2 ·
Angular Momentum of a Uniform Rod
- Bob4321
- · Replies 6 ·
How Does Relativity Affect the Motion of a Falling Stick?
- pablodel
- · Replies 1 ·
Find power dissipated in circuit with a ground
- physics416
- · Replies 7 ·