Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Perfect gasses temperature vs kinetic energy per molecule
- madah12
- · Replies 1 ·
Solving Energy & Power Homework on Train Mass & Vertical Rise
- mizzy
- · Replies 12 ·
This problem has eaten up my head -
- metalrose
- · Replies 11 ·
Center of mass equation for an ellipsoid?
- moonman239
- · Replies 1 ·
What are the relevant equations for two dimensional motion in physics?
- madah12
- · Replies 10 ·
Perfectly Inelastic Disk and Stick Collision- Angular Speed
- bcca
- · Replies 2 ·
Vector Analysis of Point Charges: Solving for Net Force
- pat666
- · Replies 2 ·
Very simple charge question, please review
- Ush
- · Replies 2 ·
Some diffraction slits/gratings questions
- lol_nl
- · Replies 5 ·
Nanotechnology: scales of tools and objects
- priscilla98
- · Replies 2 ·
Find Current (mA) - What It Means & Solution
- randomss444
- · Replies 3 ·
Potential Energy of Opposite Charges: Impact of Distance Change
- chemistry4all
- · Replies 6 ·
Friction; what does not contribute?
- jadiepants
- · Replies 5 ·
Question about order of study of topics in a standard physics course
- sona1177
- · Replies 3 ·
Elastic collision physics homework problem
- eric.c
- · Replies 3 ·
What Is the Maximum Speed of an Alpha Particle with 2.34 MeV Kinetic Energy?
- Kommandant
- · Replies 1 ·
Realistic bullet drop calculation
- warfreak131
- · Replies 13 ·
How Fast Does a Sandbag Hit the Scaffolding in a Pulley System?
- mizzy
- · Replies 9 ·
Finding the accel of two objects on an incline.
- Agent M27
- · Replies 4 ·
How do I figure out the initial velocity of an object?
- Dobro_player
- · Replies 1 ·
Oscillating sphere on a parabolic surface
- Swap
- · Replies 7 ·
Is My Interpretation of the Left Ventricle Blood Acceleration Problem Correct?
- ryant14
- · Replies 4 ·
Pressure Discrepancy in Submarine Airlock - What's the Real Answer?
- astenroo
- · Replies 6 ·
G-force question. amusment park physics
- JT1993
- · Replies 2 ·
Electric field at the center of the equilateral triangle
- mlostrac
- · Replies 3 ·
How Fast Were the Cars Traveling Before the Collision?
- ilovemynny
- · Replies 1 ·
Electric current flowing through a resistor
- PhysicsUnderg
- · Replies 8 ·
Static Electricity Homework: Positive, Negative, or No Charge?
- harimakenji
- · Replies 8 ·
Physics-Wave concepts/standing waves
- Noles1
- · Replies 30 ·
Rubber stopper hanging from the view view mirror of a car
- shawli
- · Replies 7 ·
How Do We Calculate Equivalent Resistance with Measurement Errors?
- Quantumkid
- · Replies 4 ·
Dynamics - rope attached to an object
- itsumodoori
- · Replies 1 ·
How Long Does It Take for the Cart to Complete One Rotation?
- sona1177
- · Replies 3 ·
Electric Dipole Flux at Center of Sphere: Answer & Explanation
- venkat1989
- · Replies 4 ·
Torque & Net Work Homework: Find Average Torque & Net Work
- Mowgli
- · Replies 3 ·
Finding Magnitude of Acceleration using the force
- ilovemynny
- · Replies 1 ·
How Long Does It Take Astronaut Jane to Drift Back to Her Spaceship?
- Mowgli
- · Replies 7 ·
How many revolutions per second does a bike wheel make?
- ortegavs
- · Replies 2 ·
Ideal Gas Theory: Calculate N, V from P, T
- Jenkz
- · Replies 4 ·
What is the Radius of a Helium Balloon Needed to Lift 180 kg?
- physics_freak
- · Replies 1 ·
Help with investigation topics/ideas.
- LachlanMc
- · Replies 3 ·
Really clueless = Minimum Mass Tension Force Question
- Pandaanli
- · Replies 9 ·
When was the quasar formed in relation to the Big Bang?
- lol_nl
- · Replies 4 ·
Diffraction pattern of a light beam from a narrow slit
- -Aladdin-
- · Replies 1 ·
How Do You Calculate Terminal Voltage Vab in a Circuit?
- rizardon
- · Replies 3 ·
Finding the Work done on a Ride?
- ilovemynny
- · Replies 5 ·
How to Calculate Work Done by an Escalator?
- sylavel
- · Replies 3 ·
Angular Acceleration: Homework Equations & Solution
- Mowgli
- · Replies 5 ·
How can kinematics problems be solved with reaction time taken into account?
- stphillips
- · Replies 1 ·
Bat Force and Human Lifting Capacity in Softball Pitching
- Mowgli
- · Replies 21 ·
Finding the Post-Collision Velocity: Is My Calculation Correct?
- Mowgli
- · Replies 6 ·
Frequency, and finding wave speed. Professor mistake?
- ShineyPenny
- · Replies 6 ·
Momentum & Impulse: Find Average Force in Elastic Collision
- mizzy
- · Replies 4 ·
Help with p.s.i. impact equation based on velocity, area and mass?
- cds333
- · Replies 11 ·
Help Conserv. of Energy Momentum is Driving Me Crazy
- DrSmiles
- · Replies 2 ·
L, E and i: 50.0mH Inductor and 24.0V AC Voltage Source
- -Aladdin-
- · Replies 6 ·
Conserv. of E and Work momentum
- saliiravezz
- · Replies 1 ·
How Far Do Dishes Move in the Tablecloth Trick?
- sona1177
- · Replies 4 ·
Calculating the Speed on a Roller Coaster
- ilovemynny
- · Replies 8 ·
What is the angle between the directions of motion of the helium atom
- ecogreen
- · Replies 1 ·
Power mechanics physics problem
- -Aladdin-
- · Replies 3 ·
How Is Surface Charge Density Calculated from Electric Field Magnitude?
- pat666
- · Replies 3 ·
The velocity of each object after the collision
- mizzy
- · Replies 8 ·
Calculating Mass of Gas Needed to Correct Rocket's Course
- Maiia
- · Replies 2 ·
Help with concepts of Drift Velocity
- yang09
- · Replies 1 ·
Vertical Drop how to find the speed?
- ilovemynny
- · Replies 10 ·
How Does Iceberg Buoyancy Relate to Sea Water Density?
- Agent M27
- · Replies 4 ·
How Do You Calculate the Speed of a Car Down an Inclined Driveway with Friction?
- mizzy
- · Replies 6 ·
Angle, range and extension in projectile motion?
- donkeycopter
- · Replies 2 ·
Popgun KE & PE Homework: Consider the Figure
- illidari
- · Replies 5 ·
Work and Work-Energy Theorem: Finding Work and Speed of Object Lifted Vertically
- mizzy
- · Replies 2 ·
Surface Integral: Finding Distance Along Sphere
- Gear.0
- · Replies 4 ·
Will the gun explode if I do this?
- comsubin61
- · Replies 4 ·
If there is a satellite in geosynchronous orbit
- ninetyfour
- · Replies 1 ·
Solving a Pulley Problem with Unknown Variables
- jprg
- · Replies 7 ·
Object dragged at an angle across a horizontal plane
- ninetyfour
- · Replies 14 ·
Forces - distance of a skier on an incline
- shawli
- · Replies 3 ·
Ratio of Momentum of m1 to m2: A, B, C or D?
- ecogreen
- · Replies 1 ·
Find the Critical Angle for Cylinder Rotating Homework Statement
- Krappy
- · Replies 4 ·
Solve Impulse Problem: Find Lowest Average Force
- ortegavs
- · Replies 2 ·
Combination of Speeds? Car Crash problem?
- ilovemynny
- · Replies 1 ·
How long is the bus trip from Balamb to Galbadia?
- HiSoCReeD
- · Replies 1 ·
Calculate Electric Field Between -30 & +50 uC Charges
- pat666
- · Replies 6 ·
Find the force acting on the charge at the origin
- pat666
- · Replies 2 ·
Does Temperature Affect Current Flow?
- randomss444
- · Replies 4 ·
I with vector addition and subtraction
- ninetyfour
- · Replies 2 ·
How Much Energy Is Stored in a Non-Stretching Rope and Mass System?
- Higgy
- · Replies 3 ·
Solving Distance of Train from Start to Stoppage
- Canha
- · Replies 9 ·
Sailing East: Finding Ship's Ground Velocity
- ashvinthecha
- · Replies 2 ·
Estimating image distance in lens and mirror
- ShineyPenny
- · Replies 5 ·
Forces - finding minimum mass given coefficients of friction
- shawli
- · Replies 11 ·
Electric Field and Potential in Spherical Shells
- rizardon
- · Replies 6 ·
Forces - two objects in contact
- shawli
- · Replies 6 ·
Sketching Vector Function: -yx'+xy
- abrowaqas
- · Replies 2 ·
Deriving C=mv2/r and a=v2/r: Mass, Gravity & Acceleration
- fcb
- · Replies 4 ·
Magnitude and direction of the electrostatic
- jasonlewiz
- · Replies 2 ·
Spring on 39° incline propelling 4.9 kg mass
- kris8969
- · Replies 3 ·
What is Bob's recoil speed on frictionless ice?
- sona1177
- · Replies 9 ·
Inductive time constant, value of resistance
- clockworks204
- · Replies 1 ·
Golf ball hit by club (conservation problem)
- XanziBar
- · Replies 4 ·