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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Solving Two Problems with Pulleys and Cords: Tensions and Distances
- GingerBread27
- · Replies 2 ·
Calculating Coefficient of Kinetic Friction for a Slide Loving Pig
- HobieDude16
- · Replies 11 ·
Solving a Weighty Problem: Calculating Tension in Steel I-Beam Cables
- BlackMamba
- · Replies 2 ·
How High Does a Golf Ball Rise When Hit at 30 Degrees?
- saiyajin822
- · Replies 2 ·
Orbits in an inverse cubic force field with conserved energy and angular momentum
- Odyssey
- · Replies 2 ·
Calculating Time it Takes for Soap to Slide Down a Ramp
- strugglin-physics
- · Replies 5 ·
Calculating Impact Time in Two Rugby Players Collision
- TheShapeOfTime
- · Replies 4 ·
Is the normal force on a book always equal to its weight?
- Faiza
- · Replies 6 ·
Finding orbital period of satellite 3.70×10⁸ m from planet
- shawonna23
- · Replies 6 ·
Calculate Leg Breaking Force: 60kg, 1m Height Drop
- Faiza
- · Replies 5 ·
N, which is not the case.Find Coefficient of Static Friction for 6.65 kg Box
- strugglin-physics
- · Replies 7 ·
Find Tension Between Sections of Cable?
- GingerBread27
- · Replies 2 ·
How Does Rocket Propulsion Affect Velocity and Position in Physics Problems?
- winlinux
- · Replies 4 ·
How do you combine two identical springs in series or parallel?
- colonel
- · Replies 6 ·
Finding total energy when 3 point charges are far away
- THA
- · Replies 3 ·
How Far Did the Football Travel in Total Displacement?
- soul814
- · Replies 3 ·
Distance needed for the car to stop
- lovelylemon
- · Replies 2 ·
Projectile Motion angled downwards
- NYmike
- · Replies 3 ·
Flux through a cube with non uniform electric field
- purplex76
- · Replies 3 ·
Find Length of Spiral Given by r(t) Equation
- Monsu
- · Replies 2 ·
Spring and Hammer Problem: Calculate Motion w/m, k, J, t
- e(ho0n3
- · Replies 4 ·
Factorising x squared - 11x - 42
- x_paddypaws_x
- · Replies 5 ·
Why does substituting u = f(x - ct) verify a PDE solution?
- bullet_ballet
- · Replies 10 ·
A ladybug is at rest and accelerates to 2.0 m/s^2
- Tanya Back
- · Replies 4 ·
Normal force on box on elevator floor?
- GingerBread27
- · Replies 2 ·
Identifying insulation materials in buildings
- seve
- · Replies 2 ·
Uniform charged sphere with hole?
- philipc
- · Replies 4 ·
What is the natural state of plutonium?
- billnyethescienceguy
- · Replies 2 ·
What is the Coefficient of Friction Between Two Blocks on a Horizontal Surface?
- PinkDaisy
- · Replies 5 ·
Calculate Number of Molecules in 1m^3 Air at STP
- derekbeau
- · Replies 3 ·
Projector Optics: Calculate Distances & Find Magnification
- sharp81
- · Replies 8 ·
Maximum height of particle launched from compressed spring-tray system
- Chileboy
- · Replies 16 ·
What is the formula for calculating displacement in motion?
- Turkish
- · Replies 2 ·
Calculating Water Flow Speed at Points A and B: Pipe Branching Equations
- redshift
- · Replies 2 ·
Shortest distance from a point to a hyperbola
- Monsu
- · Replies 2 ·
What is the optimal height for a lamppost to illuminate a circular walkway?
- Monsu
- · Replies 2 ·
How to Calculate Mass with Given Force and Acceleration?
- mikep
- · Replies 9 ·
Solving a Projectile's Flight: Help with Work and Energy Problem
- rocky811
- · Replies 7 ·
Differentiating f(x) = {1+[x+(x^2 + x^3)^4]^5}^6
- Monsu
- · Replies 2 ·
Why does the block move with balanced forces?
- FancyNut
- · Replies 6 ·
Finding Speed and Coefficient of Friction
- GingerBread27
- · Replies 9 ·
What Forces Act on Each Book in a Stack with Different Masses?
- Faiza
- · Replies 2 ·
How Can a Train Travel Optimally Between Two Close Stations?
- UrbanXrisis
- · Replies 13 ·
Can Negative Acceleration Indicate Speeding Up?
- Faiza
- · Replies 2 ·
Trigonometric Function Application
- nolachrymose
- · Replies 3 ·
How Does Resistor Position Affect Transistor Storage Time?
- Monsu
- · Replies 4 ·
What does the term magnetic breakaway force mean?
- buffgilville
- · Replies 2 ·
Storage time of a transistor changes
- Monsu
- · Replies 2 ·
Coefficient of kinetic friction on inclined planes
- Graif
- · Replies 3 ·
Integration by substitution for x√(x-1)
- tandoorichicken
- · Replies 7 ·
Really simple problem - can't get right answer
- justagirl
- · Replies 2 ·
Tricky track/friction problem (again)
- Ravnus9
- · Replies 2 ·
How to Calculate Maximum Angular Frequency for Blocks on a Spinning Turntable?
- justagirl
- · Replies 2 ·
Terminal Speed of 6.5 kg Ball: Calc Error?
- GingerBread27
- · Replies 4 ·
Car A catching car B with different accelerations
- saiyajin822
- · Replies 2 ·
Why Do My Physics Calculations on Force and Acceleration Keep Going Wrong?
- buffgilville
- · Replies 2 ·
Equilateral Triangle Point Charge Problem: Solving for the Unknown Charge
- Romperstomper
- · Replies 2 ·
How Long Does It Take for a Police Officer to Overtake a Motorist?
- UrbanXrisis
- · Replies 3 ·
An Atwood's Machine lab question?
- pinky2468
- · Replies 2 ·
Surface area of expanding sphere as function of time
- BrendanM
- · Replies 2 ·
Problem with energy conservation
- diegojco
- · Replies 3 ·
Triangle Area Based on Segment Division
- nolachrymose
- · Replies 2 ·
Surface area of expanding sphere as a function of time
- BrendanM
- · Replies 2 ·
Car acceleration to meet at exit 1.8 km away and bus-catching kinematics
- Kadaj
- · Replies 2 ·
Finding resultant displacement after multiple movements in a cave
- Physically Impaired
- · Replies 7 ·
Really easy 1-d motion question
- mewmew
- · Replies 2 ·
Find the probability distribution
- relinquished™
- · Replies 5 ·
Why Does Ohm's Law Calculation for External Resistor R Seem Incorrect?
- vsage
- · Replies 2 ·
Fourier integral / transform ? What is it really?
- student1938
- · Replies 5 ·
What is the potential of the other terminal in a car battery?
- avaxtasafi
- · Replies 3 ·
What is the force acting on a ball at the top of its orbit?
- buffgilville
- · Replies 3 ·
Solving Newton's Laws to Find Total Force - Physics Test Prep
- sinisterlink
- · Replies 17 ·
What is your average speed from Houston back to San Antonio?
- hytuoc
- · Replies 2 ·
Is the Given Series Convergent?
- DivGradCurl
- · Replies 2 ·
Bouncing ball and acceleration
- SahinTC
- · Replies 6 ·
Determine the magnitude and direction
- physicsss
- · Replies 11 ·
Math Triangle-inequality problem
- Anzas
- · Replies 6 ·
How many hairs are on your head?
- Faiza
- · Replies 5 ·
Find Acceleration of 11.5N Bucket Pulled by 9.7N and T Forces
- buffgilville
- · Replies 11 ·
Electric field in coaxial cable with Gauss's law
- cepheid
- · Replies 7 ·
Finding the second force when only its angle is given
- buffgilville
- · Replies 3 ·
How fast must a Puma leave to ground to go 12 feet high?
- Physically Impaired
- · Replies 3 ·
Calculating Kinetic Friction Using F=ma and X_0*K
- merlinMan
- · Replies 3 ·
Solving Kinematic Q: Plane Releasing Package, Angle of Velocity Vector
- Kalu
- · Replies 2 ·
Finding tensions in three wires supporting a 339 N cement bag
- Illmatic
- · Replies 2 ·
What is the Minimum Altitude for Ice to Melt and the Best Engine Design?
- Farside
- · Replies 5 ·
Distance Traveled in 8s: Factor of 1st Second
- kimikims
- · Replies 2 ·
Sequences/series - just a silly question
- DivGradCurl
- · Replies 9 ·
Estimate how fast he should be moving
- WillParadigm
- · Replies 5 ·
Finding the Area Within Two Ellipses Using Integration?
- ACLerok
- · Replies 7 ·
Integrating sqrt(3-x²)/sqrt(3) and sqrt(3-3x²)
- ACLerok
- · Replies 5 ·
How Does Thevenin's Method Apply to Complex Circuit Analysis?
- JamesJames
- · Replies 10 ·
How Can Friction and Spring Dynamics Affect Velocity on a Circular Track?
- Ravnus9
- · Replies 3 ·
Why Does the Basis (1, 1, 1) Satisfy the Given System of Linear Equations?
- vsage
- · Replies 2 ·
How Do You Calculate the Distance a Motorboat Travels After Engine Shutdown?
- physicsss
- · Replies 8 ·
Solving Glancing Collision: 50Kg Object Velocity Before Collision
- punjabi_monster
- · Replies 3 ·
How Does Wave Frequency Change with Each Harmonic in a Standing Wave Experiment?
- thunderfvck
- · Replies 2 ·
Calculating Power Delivered by Battery in RC Circuit
- JamesL
- · Replies 7 ·
Rocket acceleration when a bolt falls off 6.40 s after launch
- mattmaka
- · Replies 10 ·
Force due to uniformly charged rod
- stunner5000pt
- · Replies 2 ·