Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Heat power needed to partially evaporate water from a water container
- ezadam
- · Replies 1 ·
How Do You Solve a Complex Optics Problem Involving Cartesian Ovals?
- bobquantum
- · Replies 7 ·
What is the Moment of Inertia for a Door Rotating Around a Vertical Axis?
- JMUkid
- · Replies 4 ·
How to add 3 vectors of different directions together?
- CONBOSS
- · Replies 1 ·
Effect of Doping Levels on Width of Depletion Region
- kihr
- · Replies 4 ·
Square toriods vs. circula toroids
- blindnz
- · Replies 3 ·
Calculating Engine Power Output for 4000kg Car
- AllenHe
- · Replies 4 ·
Capacitors - what does same potential mean?
- logearav
- · Replies 1 ·
What Is Interface Temperature in Thermodynamics?
- genericusrnme
- · Replies 3 ·
How Long Does It Take for Two Cars to Meet in a Kinematic Problem?
- rachael123456
- · Replies 2 ·
What is the coefficient of static friction in this block and string setup?
- jjesiee
- · Replies 4 ·
Easy angular velocity question
- renob
- · Replies 1 ·
Finding Velocity Components of a Car Moving at 10.0 km/h, 35° North of East
- neyneyz
- · Replies 1 ·
Kinetic Energy Poll Ball Question
- lilbunnyf
- · Replies 11 ·
Find the power required to pull loop through constant magnetic field
- Covenant32
- · Replies 6 ·
Age of spaceship passenger traveling to Altair at 0.95c
- natxio
- · Replies 5 ·
Energy in spring (slingshot problems)
- vishavs
- · Replies 4 ·
Newton second law involving a gallon of water
- kadoma
- · Replies 14 ·
I don't understand Archimedes principle
- lionely
- · Replies 3 ·
Aether wind vs Einsteins 2nd postulate
- jakepeck
- · Replies 4 ·
How Fast Must a Baseball Travel to Clear a 29m Obstacle?
- MissJewels
- · Replies 3 ·
How Do You Calculate Initial Velocity in Projectile Motion?
- killjoy2019
- · Replies 3 ·
Water, Ice, Steam Mixture - Final Temperature
- mrjester1989
- · Replies 1 ·
What is the Conservation of Energy Principle in Bungee Jumping?
- jasonbans
- · Replies 6 ·
Spring on incline with static equlibrium, disposition unkown. .
- grtdane17
- · Replies 8 ·
Why is Hubble's Constant Measurement Different Today?
- s3a
- · Replies 4 ·
Find the potential gravitational and kinetic energy of a ball after 0.4 seconds
- Darth Poison
- · Replies 2 ·
Fluids, pressure on a wall to determine max depth
- carhartt
- · Replies 9 ·
Car curves at a radius of 50m while travelling at 100km/hr
- MissJewels
- · Replies 6 ·
Gravitational Force between two equal masses
- physgrl
- · Replies 2 ·
Determining latent heat of fusion of ice
- savva
- · Replies 10 ·
Calculating the fundamental frequency of a travelling wave
- savva
- · Replies 2 ·
Gyroscopes and the torque required for precession
- physicsguy128
- · Replies 3 ·
Rotational Mechanics Problem (Rotating solid wooden disk)
- savva
- · Replies 4 ·
A pig hanging from a string going in a circle.
- tharock220
- · Replies 2 ·
Age of passenger traveling to Altair at 0.95c
- natxio
- · Replies 2 ·
Finding Torque on current loop.
- Covenant32
- · Replies 3 ·
Conservation of Momentum, dropped vase
- clemsonguy
- · Replies 6 ·
Three part weightlifter question
- physicsgurl12
- · Replies 2 ·
Finding reaction force in x direction at hinge from loads at center of crossbar
- GatorFlyTest
- · Replies 3 ·
How Does Friction Affect Work Done on a Crate and Train?
- yttuncel
- · Replies 5 ·
Two images of a dot in a half-silvered glass sphere
- Anoonumos
- · Replies 6 ·
Expansion of a gas in Airbag System.
- Nahuel_FF
- · Replies 1 ·
Find the magnitude of the magnetic field 10 cm from the wire
- Covenant32
- · Replies 4 ·
Finding Tension is three cables attached to a particular mass?
- savva
- · Replies 5 ·
A conceptual question regarding collision/conservation of energy.
- lillybeans
- · Replies 3 ·
Stepped steel cylinder: stress and deformation under axial load
- Femme_physics
- · Replies 45 ·
Friction compared to applied force
- Shanetm
- · Replies 1 ·
Atomic Physics - Radioactive Decay and Stability
- Peter G.
- · Replies 5 ·
Buoyant Pressure problem number 7
- ChunkymonkeyI
- · Replies 1 ·
Vertical Component of this Picture?
- Imminent Fate
- · Replies 1 ·
Inelastic collision of two pendulum spheres
- ss85
- · Replies 1 ·
What is the G Force on an Astronaut in a Rocket Accelerating at 26.95m/s/s?
- DumbFounDed
- · Replies 1 ·
What is the acceleration and average speed of a car in circular motion?
- zebragiraffe
- · Replies 1 ·
How much energy is required to move this satellite to a circular orbit
- macy192
- · Replies 1 ·
What Is the Magnitude of the Particle's Angular Momentum?
- mrshappy0
- · Replies 7 ·
Polar Integration Domain part 3
- DrunkApple
- · Replies 1 ·
Internal energy of gas pushed between two cylinders
- unscientific
- · Replies 4 ·
How Much Force to Keep Foam Underwater?
- ChunkymonkeyI
- · Replies 11 ·
Conservation of Momentum in Collision of Balls: Solving for Unknowns
- unscientific
- · Replies 5 ·
Pressure and Buoyant Force problem
- ChunkymonkeyI
- · Replies 9 ·
How to set up word problems on forces, energy and work
- pantrwrstl
- · Replies 1 ·
Carnot Cycle: Reversibility Under Constant External Pressure
- asap9993
- · Replies 1 ·
Find position when a particle comes to rest from a potential energy function
- erin7749
- · Replies 1 ·
Torque direction for any system of particles
- frozendemon
- · Replies 3 ·
Electronics true or false questions
- Femme_physics
- · Replies 4 ·
2 Dimensional Collision Problem
- almatari
- · Replies 5 ·
Force Exerted by a Wedge Supporting a Sphere
- nautola
- · Replies 7 ·
Pressure, Buoyant Force problem
- ChunkymonkeyI
- · Replies 4 ·
Maximum force to not rotate a cylinder
- nautola
- · Replies 3 ·
What is the point of having different engine cycles?
- JustinLiang
- · Replies 1 ·
Finding the Cross Product for Angular Momentum
- mrshappy0
- · Replies 2 ·
W 30° N: Interpreting the Directional Coordinate
- GingerKhan
- · Replies 2 ·
Translational kinetic energy vs. rotational kinetic energy
- mm2424
- · Replies 1 ·
Torque on a suspended uniform bar
- nautola
- · Replies 4 ·
Why add pressure in A to the mercury column height difference in a U-tube manometer
- tsslaporte
- · Replies 1 ·
Calculating Gravity: Determine G from Acceleration
- Miike012
- · Replies 2 ·
2 kg mass collides with 1.5 kg pendulum, travels up 30° incline
- louie3006
- · Replies 9 ·
Collision/conservation of linear momentum
- jnmoyer
- · Replies 8 ·
Equilibrium of a Rigid Body, a boom of a crane
- valeriex0x
- · Replies 1 ·
How Is Angular Speed Calculated After Clay Impacts a Wheel?
- mrshappy0
- · Replies 8 ·
How Does Changing Earth's Mass and Size Affect Its Rotation Period?
- mrshappy0
- · Replies 3 ·
Elastic Potential Energy Problem
- phizics09
- · Replies 1 ·
Understand some quantum numbers in a problem
- fluidistic
- · Replies 7 ·
Pressure, Buoyant Force problem 8
- ChunkymonkeyI
- · Replies 4 ·
Variable Resistance across a Bulb
- Marshillboy
- · Replies 3 ·
Tricky density and bouyancy question
- jlin94
- · Replies 3 ·
Do two bodies on Earth experience equal and opposite gravitational forces?
- Miike012
- · Replies 3 ·
What is the Resistance of a 1 km Composite Copper-Steel Wire?
- SeannyBoi71
- · Replies 5 ·
Calculate Current Through Resistor - Kirchhoff's Rules
- crimsonn
- · Replies 3 ·
Normal force on a dense object resting on container bottom
- jlin94
- · Replies 1 ·
Momentum/Collision Special Relativity Problem
- BetaDecay57
- · Replies 1 ·
Pivot point of a beam and torque
- danl2011
- · Replies 11 ·
Calculating the Impulse (Magnitude and direction) question - Thanks
- nukeman
- · Replies 4 ·
Finding normal force acting on an object (Fn)?
- shamma
- · Replies 1 ·
Rigid Body Reel and hanging mass.
- JJRKnights
- · Replies 1 ·
Displacement of zigzaging dust particle
- Pseudopro
- · Replies 11 ·
How Is the Coefficient of Friction Calculated for an Amusement Park Ride?
- chicagobears
- · Replies 3 ·
Why total energy exceeds kinetic energy in proton-antiproton collision
- charged-ant
- · Replies 1 ·
How Do You Calculate Tension in Different Configurations of Supporting Strings?
- ggmissmolly
- · Replies 3 ·