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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Optics [refraction] - What is the actual angle from the surface of the water
- Paulo Serrano
- · Replies 4 ·
Calculate Battery Energy Delivery Rate for Parallel Circuit
- Ruleski
- · Replies 4 ·
Transverse wave snapshot times and pulse reflection on fixed string
- mfu
- · Replies 6 ·
Simple Circuit Diagram (Ohm's Law Application)
- exitwound
- · Replies 14 ·
Battery (amp hours, total charge, total current)
- tony873004
- · Replies 6 ·
Calculating Momentum for a Malfunctioning Space Probe
- mandy9008
- · Replies 1 ·
Find the velocity of each object after the collision
- mandy9008
- · Replies 15 ·
Finding internal energy change in a adiabatic compression process.
- tralelale1234
- · Replies 3 ·
Finding velocities of two people on skates
- mandy9008
- · Replies 5 ·
Circular motion with decreasing speed
- bluewood
- · Replies 1 ·
What Defines Deceleration in Physics?
- rws_killer5
- · Replies 11 ·
Conservation of momentum: vertical shot
- mandy9008
- · Replies 2 ·
Conservation of momentum railroad car collision
- mandy9008
- · Replies 10 ·
Resultant Force: 40N in Negative X Direction
- alexmolinavr6
- · Replies 2 ·
Linear acceleration and angular acceleration
- thesandalman
- · Replies 11 ·
How Many Atomic Diameters Does a Neon Atom Move Between Collisions?
- NeverGiveUp
- · Replies 3 ·
Conservation of Energy in a Block-Cylinder System
- shashusad
- · Replies 2 ·
Conservation equations needed for 3D collision problems
- CarlosPacheco
- · Replies 5 ·
Projectile Motion and linear motion problem
- Clipse
- · Replies 4 ·
Conservation of momentum of astronaut in her space suit
- mandy9008
- · Replies 12 ·
What Are the Intercepts and Intersection Points of Linear Inequalities?
- ffa
- · Replies 1 ·
Lob vs. Bullet Pass: Initial Speed and Launch Angle Calculation
- perplexed1205
- · Replies 1 ·
Collision between two croquet balls
- whereisccguys
- · Replies 7 ·
Moving charges and magnetic field
- hasan_researc
- · Replies 13 ·
Finding recoil speed given force, mass, and velocity
- mandy9008
- · Replies 13 ·
Relative Velocities: What is the direction of the plank's movement on the ice?
- mandy9008
- · Replies 3 ·
Exact relationship between φ and γ
- randomss444
- · Replies 1 ·
Finding acceleration and tension in a falling yoyo
- thesandalman
- · Replies 1 ·
How Many Ions Are Produced in Air by 1 MeV Radiation?
- Ali Asadullah
- · Replies 2 ·
What is the momentum of the ball at different locations?
- mandy9008
- · Replies 15 ·
I with hw (my book hasnt came in yet)
- JJ89
- · Replies 11 ·
Special relativity: particle collision
- Uku
- · Replies 2 ·
Calculating Stopping Time of Car at 77 km/h
- swimstar
- · Replies 4 ·
Moments of Inertia Derivation,
- Ush
- · Replies 14 ·
Calculating Weight Increase in Car Crash: 12 Stone Occupant at 30mph
- Simo43
- · Replies 3 ·
Why is the distance traveled by the bird towards the wall incorrect?
- chaoseverlasting
- · Replies 16 ·
Car Speed When Passing Train: 49 m/s
- swimstar
- · Replies 2 ·
What is the acceleration of gravity on a strange planet?
- clockworks204
- · Replies 11 ·
Determine Jupiter radius based on graviational acceleration at surface
- WannaLearn
- · Replies 3 ·
What is the speed of the arrow shot from the bow in projectile motion?
- Metahominid
- · Replies 4 ·
Solving Bobbin on Incline: Angle of Tilt θ
- wwshr87
- · Replies 2 ·
How Do Electrons and Ions Affect Current Calculation at Point A?
- hasan_researc
- · Replies 3 ·
How Much Current Is Induced in a Moving Rectangular Circuit Near a Wire?
- N_Spears
- · Replies 15 ·
Understand Why Current Is Defined as a Scalar
- hasan_researc
- · Replies 2 ·
Acceleration of two masses on a pulley
- wwshr87
- · Replies 1 ·
What is the current through the 10-ohm resistor?
- COKEDUDE
- · Replies 2 ·
Work done by a variable force
- kevin023
- · Replies 1 ·
How Do Falcon Attacks Alter the Flight Path of Their Prey?
- mnafetsc
- · Replies 3 ·
Thermodynamics : Work in a Cyclic Process
- rizardon
- · Replies 1 ·
Special relativity: proof of symmetry concept
- Uku
- · Replies 2 ·
Is Kilogram Force the Same as Kilogram Mass?
- Dell
- · Replies 3 ·
Cyclist maximum acceleration and braking distance on horizontal road
- thereddevils
- · Replies 10 ·
Was the driver speeding before a 16 m skid to collision?
- calcite
- · Replies 7 ·
When Does a Swing Rider Feel the Lightest?
- lucky777
- · Replies 1 ·
Heat capacities of a gas mixture.
- Je m'appelle
- · Replies 1 ·
Force exerted by external field
- randomss444
- · Replies 4 ·
Calculating Maximum Speed on Banked Curve: Centripetal Force
- swimstar
- · Replies 3 ·
How High is the Sea Cliff Based on Sound Travel Time?
- dwilson89
- · Replies 3 ·
Alpha Particle Charge: Is it 2x2.50x10^-21?
- randomss444
- · Replies 4 ·
Particle with gravity and electric field
- XanziBar
- · Replies 4 ·
Calculating Angular Size of Moon with Telescope
- A B C
- · Replies 3 ·
Angular acceleration of blender blades slowing from 7000 rpm
- zeromodz
- · Replies 4 ·
Formula for radial acceleration
- vwillis
- · Replies 1 ·
Average speed relative to the magnitude of the average velocity?
- rws_killer5
- · Replies 19 ·
Formula for Circular Motion and Tangential Speed
- vwillis
- · Replies 8 ·
Special relativity: components of a metric tensor
- Uku
- · Replies 2 ·
What Does the Area Under an Acceleration-Time Graph Represent in Physics?
- crl46
- · Replies 1 ·
Solving for Tension in a Mass Slowing Down
- ortegavs
- · Replies 1 ·
What is the Minimum Angle for a Ladder to Not Slip Against a Wall?
- shards5
- · Replies 1 ·
Deriving the Rotation Period of a Planet from Density
- skullers_ab
- · Replies 6 ·
Conservation of Energy,pendulum question
- missileblitz
- · Replies 4 ·
Finding acceleration and tension in a pulley system
- blackrose01
- · Replies 5 ·
Work,energy COM and linear momentum conservation
- Swap
- · Replies 5 ·
Mass moment of inertia of a slanted solid parallelepiped
- MikeHoulder
- · Replies 7 ·
How Much Force is Needed to Stop a Grinding Wheel in 20 Seconds?
- clockworks204
- · Replies 7 ·
Finding relationship between dTᵢ/Tᵢ and drₛ/rₛ in thermodynamics
- Je m'appelle
- · Replies 1 ·
Solving a Simple Circuit involving Current Source by the Loop Current Method
- Lemm
- · Replies 2 ·
Does Current Remain Constant in a Wire with Varying Cross Sections?
- Mitchtwitchita
- · Replies 1 ·
Charging a capacitor at constant rate
- devcathk
- · Replies 1 ·
What is the speed of two objects after a perfectly inelastic collision?
- Agent M27
- · Replies 10 ·
How to calculate average acceleration from distance and time
- mido22
- · Replies 7 ·
How Do I Find the Bessel Transform of a Sequence of Numbers?
- csmines
- · Replies 2 ·
Electric field, direction and magnitude
- minifhncc
- · Replies 5 ·
Rock's Velocity at Bottom of Hole
- sona1177
- · Replies 1 ·
Constant Acceleration-Find Initial Velocity
- sona1177
- · Replies 2 ·
Two charged capacitors cross connected to each other
- PhysicsUnderg
- · Replies 2 ·
Calculating Time for a Radio Pulse to Travel between Earth and Venus
- DrnBrn
- · Replies 5 ·
Projectile Motion: only g and t known
- joshmdmd
- · Replies 3 ·
Unbanked and banked Curves problem
- dvela
- · Replies 10 ·
Kinematics Question: Child on Trampoline Jump Height Calculation
- Gurvir
- · Replies 6 ·
Cowboy hearing echoes between two parallel cliffs
- mickellowery
- · Replies 12 ·
Average force exerted by a wall on a ball
- Agent M27
- · Replies 4 ·
Equation of motion for mass with spring and damper
- bobred
- · Replies 6 ·
How Do I Solve This Tricky Calculus Problem About Rolling Ball Bearings?
- Tony Zalles
- · Replies 6 ·
How to get the power that is dissipated
- Mitchtwitchita
- · Replies 1 ·
Calculating Final Temp of Water in Styrofoam Cup
- ramenluver50
- · Replies 1 ·
About The Bohr Model of the Hydrogen Atom
- A B C
- · Replies 2 ·
How Far Will a Sled Travel on Dry Ground After Sliding Down a Frictionless Hill?
- r_swayze
- · Replies 3 ·
Can the speed of sound reach the speed of light?
- michael3.1415
- · Replies 12 ·