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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The percentage error in the Radioactive substance Population
- curious_mind
- · Replies 5 ·
Calculating Chemical Potential from Energy Derivatives
- GravityX
- · Replies 4 ·
Is a point of inflection concave or convex? - Which answer is correct?
- Sarah66
- · Replies 2 ·
Solving the SHM differential equation
- member 731016
- · Replies 4 ·
Why is it important to classify circuits as series or parallel?
- Sunwoo Bae
- · Replies 5 ·
How Does a Moving Support Affect Pendulum Motion?
- Lambda96
- · Replies 23 ·
What is the least time to get from point ##A## to point ##B##
- chwala
- · Replies 2 ·
Morin classical mechanics differential equation problem
- member 731016
- · Replies 8 ·
Deriving position function for object in SHM
- member 731016
- · Replies 5 ·
Finding time difference between two arriving wave fronts
- member 731016
- · Replies 6 ·
What Is The Maximum Force The Locust Exerted on The Plate?
- BurpHa
- · Replies 24 ·
Need Help to Understand an Equation for Air Resistance
- Some1WhoNeedsHelp
- · Replies 29 ·
Describing Rolling Constraint for Rolling Disk With No Slipping
- theshape89
- · Replies 6 ·
Calculate orbital angular momentum
- ssarpal
- · Replies 2 ·
Density of cylinder that undergoes vertical oscillation
- dobbygenius
- · Replies 1 ·
How Does an Asteroid's Speed Change Upon Impact with Mars?
- Tom4
- · Replies 7 ·
Understanding Periodic Motion: Proving and Explaining its Repeating Nature
- member 731016
- · Replies 25 ·
Angular deceleration of a washing machine spin cycle
- Zoubayr
- · Replies 9 ·
Help Me Tackle This Question: How Do I Start?
- dantetoledo
- · Replies 8 ·
Phase Transitions in the Van Der Waals Gas
- GravityX
- · Replies 2 ·
How Does Pressure Change Affect Internal Energy in an Ideal Gas?
- hockeyfan123
- · Replies 4 ·
What's wrong? Electric potential of a point on a ring
- yucheng
- · Replies 10 ·
Describing motion of a particle qualitatively
- member 731016
- · Replies 28 ·
PV diagram, ranking heat transfer between 4 processes
- HoboBones
- · Replies 5 ·
Understanding equations and their relationships (multiple equal signs)
- HoboBones
- · Replies 7 ·
Angular velocity of an airplane
- Zoubayr
- · Replies 18 ·
Motion with constant angular acceleration
- Zoubayr
- · Replies 3 ·
Finding Constants: Potential and Field Analysis
- ermia
- · Replies 5 ·
Why is the Kinetic Energy of a Spring (1/6)mv²?
- Differentiate it
- · Replies 13 ·
Why do some physics textbooks say P = dK/dt and others say P = dE/dt?
- member 731016
- · Replies 5 ·
Bernoulli’s Equation for plugging finger into dike under water
- member 731016
- · Replies 4 ·
Pendulum Question (Matlab Coursework)
- some bloke
- · Replies 4 ·
Friction and an object stopping
- nav888
- · Replies 12 ·
Why Measure the Center of Mass from the Same Position After a Collision?
- String theory guy
- · Replies 2 ·
Proving COM Moves 0.5(x_1 + x_2) in Δt
- member 731016
- · Replies 5 ·
Displacement and distance when particle is moving in curved trajectory
- NTesla
- · Replies 66 ·
Did I Miscalculate the Speed for a Leaking Cart Under Acceleration?
- PhysicsRock
- · Replies 21 ·
Finding Area of Ring Segment to Find Electric Field of Disk
- member 731016
- · Replies 10 ·
Calculate the Speed of a Satellite Moving in a Stable Circular Orbit
- Jade_lowe
- · Replies 1 ·
No Limits of Integration for Electric Field Integral?
- member 731016
- · Replies 5 ·
Elastic Collision Between Two Balls
- susan_khan
- · Replies 9 ·
How to Calculate the Bounces of a Bouncy Ball
- oobercharge
- · Replies 5 ·
Variable mass, uniform body, force -- pulling a massive rope
- Spector989
- · Replies 31 ·
Work, Power and Energy — Lifting a coiled rope up off a surface
- Differentiate it
- · Replies 52 ·
Why Use Right-Handed Coordinates for Problem Solving?
- member 731016
- · Replies 8 ·
Does distance affect torque in hanging sign problem?
- paulimerci
- · Replies 42 ·
Difference between scalar and cross product
- member 731016
- · Replies 5 ·
Why do we have a charge in the denominator of equation for voltage?
- Callmelucky
- · Replies 2 ·
Explaining the Cross Product for Two Vectors
- member 731016
- · Replies 11 ·
Finding linear acceleration of a spool and cable
- haven
- · Replies 6 ·
How to find Vmax squared for circular motion?
- Jade_lowe
- · Replies 7 ·
Final velocity of a block on a spring pulled downhill
- Elaren
- · Replies 11 ·
Two masses on a rotating platform
- robtum
- · Replies 3 ·
Estimates of voltage drop with distance in weak electric field
- livio
- · Replies 21 ·
The Work of Friction: Explained in .32m
- aqryus
- · Replies 8 ·
Why Is My Velocity Calculated Differently than the Solutions?
- member 731016
- · Replies 46 ·
Two black holes moving in a circular orbit around a point
- slogals
- · Replies 6 ·
Why Does Positive Charge Exert Elec. Field Beyond Neg. Charge?
- Callmelucky
- · Replies 16 ·
Solving for 'a' with Torque, Force, and Mass Moment of Inertia
- haven
- · Replies 3 ·
Projectile motion problem – determining initial velocity of throw
- Kaiser98
- · Replies 3 ·
Sign hanging from massless beam attached to hinge supported by string
- hisiks
- · Replies 10 ·
Work done on a magnetic dipole (compass needle rotating)
- Ugnius
- · Replies 12 ·
Surface Tension: Plate-Water Interface
- vcsharp2003
- · Replies 4 ·
System of particles, impulse and conservation of angular momentum
- Spector989
- · Replies 23 ·
2 Capacitors and energy density
- Shreya
- · Replies 6 ·
Why are the three different surface tensions in the directions shown?
- vcsharp2003
- · Replies 4 ·
I am stuck on a calculation -- Entropy change for a compound system
- Lambda96
- · Replies 10 ·
Solving Fluid Statics Problem: Accounting for Atmospheric Pressure
- member 731016
- · Replies 9 ·
Volumetric flow of a overflowing cone
- jackkk_gatz
- · Replies 6 ·
How to Calculate Speed of Head of Driver After Collision?
- susan_khan
- · Replies 10 ·
Understanding Destructive Interference in Radio Waves
- jolly_math
- · Replies 5 ·
Mental Health During the COVID-19 Pandemic
- Elara04
- · Replies 2 ·
Can the positive direction be different for each particle in a system?
- nav888
- · Replies 15 ·
Why can't I treat the disk as a point mass?
- cory21
- · Replies 3 ·
Work and Energy for a mass sliding down a curved ramp (why does the ramp move?)
- MatinSAR
- · Replies 46 ·
Diatomic molecule at a constant temperature
- LCSphysicist
- · Replies 1 ·
Find the acceleration of the system (2 blocks sliding on a table)
- paulimerci
- · Replies 23 ·
Rotational motion magnitude question -- Rod mounted on a pivot
- oddenforcer
- · Replies 11 ·
Work greater than heat given to colder reservoir -- impossible?
- Callmelucky
- · Replies 18 ·
Energy/Power Question for pumping water out of a well
- Physics_Amazing
- · Replies 7 ·
Troubleshooting F = q v B sin(theta) Calculation
- MichaelTam
- · Replies 12 ·
A Guide to the Best Beaches in California
- Differentiate it
- · Replies 9 ·
Help Calculate Work Done in Adiabatic Process & Fill Table
- Callmelucky
- · Replies 19 ·
Waves- sending a pulse across a weighted line
- Eaoke3
- · Replies 3 ·
How much force does the 20 kg block exert on the 10 kg block?
- paulimerci
- · Replies 17 ·
Physics project confusion (effects of length on a pendulum)
- dpatil
- · Replies 5 ·
Calculating Pressure in a Flowing Liquid
- vcsharp2003
- · Replies 17 ·
What is the Correct Angle for Tension Force in Arm Mechanics?
- Spocktastic
- · Replies 2 ·
Two Particles Connected by Massless Rod: Dynamics Analysis
- Booze
- · Replies 5 ·
Maximum angle reached by a cube placed inside a spinning cylinder
- Samuel N
- · Replies 22 ·
Two vectors forming right handed set?
- Andrew Tom
- · Replies 4 ·
Help understanding this velocity-time question
- sc8
- · Replies 5 ·
What is the angular acceleration of the rod?
- Asad Raza
- · Replies 18 ·
Conservation of Momentum of Rocket Exploding after Takeoff
- hisiks
- · Replies 5 ·
Why is cosine alpha needed in electric field integral over a sphere?
- cwill53
- · Replies 9 ·
Specific volume and enthelpy of mercury
- jahanzebikram
- · Replies 5 ·
Calculating how many revolutions it takes to reach the final speed
- haven
- · Replies 10 ·
3 pulley problem with attached masses
- patric44
- · Replies 15 ·
Net torque about an axis through point A in a massless rod
- paulimerci
- · Replies 33 ·
How far will the bottom gate of a reservoir open?
- jackkk_gatz
- · Replies 56 ·