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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Rocket Motion: Solving the Rocket Equation for Lift-Off
- SlickJ
- · Replies 5 ·
A Question of De Broglie Waves?
- CollectiveRocker
- · Replies 2 ·
Check my integration work and help with problem 25
- EggNest
- · Replies 7 ·
What is the formula for velocity and acceleration?
- Katie
- · Replies 6 ·
How many revolutions does a diver make while falling from a cliff?
- BlackMamba
- · Replies 10 ·
Formulae for sums of first n even and odd integers
- Phoresis
- · Replies 10 ·
Boat speed after throwing bricks at once versus one at a time
- mfianist
- · Replies 2 ·
Calculating Scale Reading in an Accelerating Elevator
- IShouldBSurfing
- · Replies 2 ·
Power plant energy extraction and efficiency with cooling water
- gregbellows
- · Replies 2 ·
Can Prime Numbers x Satisfy x^2 = v^3 + 1?
- Pandaren
- · Replies 9 ·
Projectile Motion Help: Calculating Vo, V, Angle of Launch and Angle of Impact
- ballahboy
- · Replies 6 ·
How would i find the speed of the water
- Monsu
- · Replies 2 ·
Solving 3 Object Tension Problem with Frictionless Pulleys
- Whyren
- · Replies 10 ·
Prove DF² = AF·EF and BF = DF for tangent lines to a circle
- Anzas
- · Replies 4 ·
Minimum static friction problem
- AwesomeMan
- · Replies 2 ·
Where is the Center of Mass for a Semicircular Wire?
- physicsss
- · Replies 3 ·
Calculating Internal Energy Change in Isobaric Expansion
- nemzy
- · Replies 3 ·
Finding Vertical Distance of a Horizontally Thrown Ball at 45.08 m/s
- Warwick
- · Replies 2 ·
Ways for 6 girls to sit in 10 chairs with Sue and Sally together
- Dooga Blackrazor
- · Replies 12 ·
Solving the Ice Block Bullet Problem: Calculating Melting Quantity"
- nemzy
- · Replies 2 ·
What's the Hill Incline Angle Based on Car's Power Difference?
- NotaPhysicsMan
- · Replies 21 ·
What is the coefficient of friction and weight of the block?
- kimikims
- · Replies 3 ·
How Do You Calculate Acceleration and Speed of a Block on an Incline?
- DLxX
- · Replies 2 ·
Solving Equations with Multiple Variables
- Leaping antalope
- · Replies 6 ·
Block with pulley: why does the bottom block accelerate without friction?
- mewmew
- · Replies 5 ·
How Does Tension Balance Dirty and Laundered Money in Physics?
- VinnyCee
- · Replies 2 ·
What are some easy projectile experiments for 11th grade physics projects?
- star_nimmi
- · Replies 3 ·
Detailed problem I did need verification
- mad
- · Replies 5 ·
Find the integral of x/(x-1)^2 with respect to x
- Beretta
- · Replies 6 ·
Calculating the Radius of a Banked Curve Using Newton's Second Law
- mikep
- · Replies 6 ·
What Values of a Allow a Polynomial to Have Reciprocal Roots?
- Derivative86
- · Replies 6 ·
Bullet embedded in block with friction: find initial speed
- Gallium
- · Replies 8 ·
Solving Kinetic Energy Change in Inelastic Collisions
- buffgilville
- · Replies 2 ·
Epsilon in Simple Harmonic Oscillators
- mikeyman2010
- · Replies 4 ·
Law of conservation of energy problems
- FarazAli
- · Replies 4 ·
Calculating Spring Compression and Impact Speed of a Dropped Block
- 7C0A0A5
- · Replies 5 ·
Do conservative forces mean no external forces and is momentum conserved?
- justagirl
- · Replies 7 ·
Conservation of Energy and coefficients of friction
- chem07
- · Replies 3 ·
Project Ideas for Physics Class Vehicle Contest
- UrbanXrisis
- · Replies 2 ·
Linear approximation, implicit differentiation, and mean value theorem problems
- buffgilville
- · Replies 5 ·
Rather simple bouncing ball problem average acceleration
- Godad
- · Replies 2 ·
Pendulum tangential acceleration, torque, and rotational dynamics
- rememberww2
- · Replies 2 ·
Static and kinetic friction, tension, and equilibrium problems
- Kadaj
- · Replies 2 ·
What Are the Values for Which H(x,y) Always Equals y?
- Chu
- · Replies 1 ·
Finding derivatives and critical points for two functions
- buffgilville
- · Replies 2 ·
How Strong is the Gravitational Pull Between Tom and Sally?
- kimikims
- · Replies 5 ·
Vector formulas and how to apply them in problems
- TuRbOxChAz
- · Replies 4 ·
What is the initial velocity of the stone?
- buffgilville
- · Replies 2 ·
Planar Kinetics of a Rigid Body
- jjiimmyy101
- · Replies 6 ·
Solving for an x^2+y^2=Ae^x Circle Passing Through (0,1)
- Phyphy
- · Replies 2 ·
Helicopter rescue and curved runway particle problems
- Winner
- · Replies 2 ·
Isn't this weird? (convergence of a sequence)
- quasar987
- · Replies 5 ·
Angular and Tangential Variables
- BlackMamba
- · Replies 3 ·
How can I calculate the time it takes to walk up a working escalator?
- Phyzix
- · Replies 2 ·
Finding force between two charges and resistance of a heating element
- Farside
- · Replies 3 ·
How do you use the pow function from math.h?
- tandoorichicken
- · Replies 2 ·
Simplifying complex fractions with nested division
- Dooga Blackrazor
- · Replies 7 ·
Spaceship Mission: Vector Functions for Flight from (1,2,3) to (4,7,5) in 1 Hour
- matpo39
- · Replies 2 ·
What Is the Meaning of Finding a Wheel's Moment of Inertia About an Axis?
- jjiimmyy101
- · Replies 2 ·
How do I solve these integration review questions on volumes and applications?
- FancyNut
- · Replies 4 ·
Why Does My Calculation of Water's Temperature Change Give the Wrong Result?
- punk_rawk_jazz
- · Replies 2 ·
Significant figures in Beer's law calculation with colorimeter data
- mad
- · Replies 3 ·
Car braking problem: finding speed after going 1/3 of stopping distance
- jhson114
- · Replies 6 ·
Calculating Improper Integral of x^3/(x^4-3)^1/2
- FancyNut
- · Replies 3 ·
Torque from jet engine weight with 9300 N force
- BlackMamba
- · Replies 8 ·
How to Calculate Space Station Rotation Frequency?
- Purduenub03
- · Replies 2 ·
Can the Frequency of Oscillations Measure Fluid Density in a Loaded Test Tube?
- garytse86
- · Replies 4 ·
A philisophical Heisenberg and Zeno question
- wolf921
- · Replies 3 ·
Birth Ratio Problem: Rabbit Population Triples
- Phyphy
- · Replies 3 ·
Calc Average Total Force for 50kg Cyclist on 1km Hill
- jenc305
- · Replies 6 ·
What is the distance to the nucleus when the particle's velocity is zero?
- photon_mass
- · Replies 2 ·
Work and Kinetic Energy equation
- Spectre5
- · Replies 8 ·
Solving Collision Problem: Finding Speeds of Balls After Impact
- lmf22
- · Replies 3 ·
Introductory physics textbooks and resources for college
- aec2003
- · Replies 6 ·
How to Calculate Efficiency and Heat Rejection in an Engine?
- jin
- · Replies 4 ·
Restricting Coefficients in a General Second Degree Equation
- Khan86
- · Replies 3 ·
How Do You Solve Rocket and Escalator Motion Problems?
- Phyzix
- · Replies 5 ·
Calculating Acceleration and Angle on a Frictionless Air Track
- jenc305
- · Replies 2 ·
Calculating Force Exerted by 1000kg Car on 450kg Trailer
- dabouncerx24
- · Replies 4 ·
Solving "6. [SFHS99 5.P.60.]" Physics Problem
- splinter
- · Replies 8 ·
Solving for Velocity and Mass in an Elastic Collision
- lmf22
- · Replies 2 ·
Concentric cylinders and grounding
- Allday
- · Replies 2 ·
Magnetic Field Due to a Circular Loop
- JamesL
- · Replies 2 ·
Calculating Rotation Speed for Artificial Gravity on a Rotating Space Station
- SnowOwl18
- · Replies 12 ·
If ia charge is placed inside a conductor, is the electric field inside zero?
- stunner5000pt
- · Replies 2 ·
Need a setup for a fiction problem
- Kadaj
- · Replies 2 ·
Find mean distance from asteroid Icarus to the sun
- SnowOwl18
- · Replies 6 ·
Help: Solve Kinetic Energy of Pushing Piano up an Incline
- buffgilville
- · Replies 5 ·
Rotational Motion of a long pole
- Skomatth
- · Replies 2 ·
Calculating Kinetic Energy Change of Earth's Orbit
- lmf22
- · Replies 2 ·
Calculating the Resultant Force at J
- Kdawg
- · Replies 3 ·
Block sliding down 50° ramp with opposing rope force
- AtlBraves
- · Replies 3 ·
Best Physics AP Books for High School Students?
- Kadaj
- · Replies 18 ·
Finding acceleration from scale reading in an elevator
- benji
- · Replies 5 ·
Help Needed: Solving Golf Ball Kinetic Energy Problem
- miranda82
- · Replies 5 ·
Solving a Grade 12 Physics Problem: Pulling vs Pushing a Heavy Box
- JimmyRay
- · Replies 3 ·
GAIN and IMPEDANCE of a complex Circuit
- JamesJames
- · Replies 2 ·
Finding where gravitational force is zero between Earth and Moon
- Dragonex
- · Replies 2 ·
How Can You Solve Problems Using Newton's Laws?
- neik
- · Replies 2 ·
Magnetic Fields in Zero Gravity: Do They Interact with Gravity?
- Viper2838
- · Replies 4 ·