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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How Fast Did Klaus Spinka Accelerate on Grass Skis?
- OttoVon
- · Replies 12 ·
Launching a Probe to the Sun: Aim Against Earth's Velocity?
- Batracho
- · Replies 5 ·
Relationship Between Acceleration on a ramp and Acceleration due to gravity
- ScienceSinger
- · Replies 3 ·
Total Impulse: Solving the Equation
- lightbender
- · Replies 1 ·
Motion along a curved path -- introductory
- kkdj20
- · Replies 7 ·
Kinetic energy of a rotating and translating body?
- Chris L
- · Replies 3 ·
Cartesian Convention of Displacement Vectors.
- Hijaz Aslam
- · Replies 1 ·
Work done by tension on blocks connected over a pulley
- BOAS
- · Replies 8 ·
Gas Laws -- An astronaut breathing presurized air
- Robyn Gibson
- · Replies 44 ·
Kinematics Question. Incline, Spring, Friction
- dmoney123
- · Replies 4 ·
How Can You Measure Torque in a Servo-Controlled System?
- madgorillaz15
- · Replies 5 ·
Finding currents I2 and I3 in a circuit with parallel resistors
- Mark Rice
- · Replies 3 ·
Energy in a long inextensible string
- throneoo
- · Replies 2 ·
What is the speed of the 8-ball after the collision?
- Whitestripes
- · Replies 2 ·
Calculating Work for 2 Linked Springs
- mshiddensecret
- · Replies 1 ·
How Is Average Acceleration Calculated for a Clock's Hour Hand Movement?
- ianperez
- · Replies 3 ·
Angle of Deflection of water in an electric field
- og1764
- · Replies 14 ·
About velocity equation in simple harmonic motion
- Thaurron
- · Replies 4 ·
Find Banking Angle and Normal/Friction Force on Curved Road
- logan3
- · Replies 3 ·
Rotational motion: Find angular displacement when rotation speed is changing
- mememe1245
- · Replies 3 ·
Force exerted on a pivot point
- benshields
- · Replies 2 ·
Gravitational acceleration problem
- Kenny Wong
- · Replies 4 ·
Basic Heisenberg uncertainty principle stuff
- rtsswmdktbmhw
- · Replies 4 ·
Gravitation and Binomial Expansion
- novicephysicist
- · Replies 1 ·
Thermometer touching the floor and a carpet
- Karol
- · Replies 8 ·
Resistance In Series/Parallel circuits
- Mark Rice
- · Replies 4 ·
What is the value of the inductor in this capacitor and inductor problem?
- Chase11
- · Replies 5 ·
Two kids sledding down frictionless hill- conservation of momentum/energy
- grantaere
- · Replies 9 ·
There is question regarding relativity
- ghostinpants
- · Replies 4 ·
Plotting lnη vs 1/T for Water and Alcohol Viscosity Measurements
- AndrejN96
- · Replies 1 ·
Center of Mass of Three Beads Equation
- starJ9
- · Replies 1 ·
Physics Graph question -- Pushing a block on a frictionless surface
- Bdb1331
- · Replies 3 ·
Calculating Number of O2 and N2 molecules per m^3 of air
- FaraDazed
- · Replies 8 ·
Relativistic mechanics Taylor expansion
- infinitylord
- · Replies 6 ·
How Much Energy Is Released from 1kg of Deuterium in Fusion?
- desmond iking
- · Replies 8 ·
Calculating Kinetic Friction for Skidding Motorcycle
- rrosa522
- · Replies 1 ·
Energy Req'd to Remove Nucleon from 12_6 C Atom
- desmond iking
- · Replies 6 ·
Activity of substance after a certain time
- desmond iking
- · Replies 7 ·
Determining Projection Angle With Little Information
- Ali0086
- · Replies 17 ·
Having trouble on this energy and momentum question
- garr6120
- · Replies 4 ·
What is transactional acceleration? Conceptual Question
- gcombina
- · Replies 3 ·
Calculate Acceleration & Tension of a Pulley System
- Ciaran
- · Replies 3 ·
Why is energy to remove a nucleon from deuterium the full binding energy?
- desmond iking
- · Replies 1 ·
Force between Electric currents
- Xgens
- · Replies 1 ·
Solving the Tension in a String Attached to a 10 kg Block
- JohnD623
- · Replies 1 ·
What quantity is conserved in a puck's circular motion around a thin pole?
- SpaceExplorer
- · Replies 5 ·
Ice and water heated in insulated container with 400W immersion heater
- olduvai
- · Replies 4 ·
Measurement uncertainty: Standard uncertainty of the mean
- garyd
- · Replies 4 ·
Graphing wave functions and probability densities in Mathematica
- Ascendant78
- · Replies 5 ·
Finding battery voltage with capacitors in series and parallel
- 24karatbear
- · Replies 3 ·
Heat pump COP and heat delivery rate with 2000W input
- toothpaste666
- · Replies 8 ·
Determining Electric Potential
- Kennedy Poch
- · Replies 3 ·
Conservation of energy I think
- Benevelli
- · Replies 1 ·
Ion or Neutral Atom? AI Decays Into Stable Si
- desmond iking
- · Replies 3 ·
Conservation of Energy w/ Frictional Forces
- maxhersch
- · Replies 5 ·
Calculating Cost Per Unit of Solar Energy from Data Sheet
- sasuke07
- · Replies 2 ·
Finding currents in branches of a circuit
- reed2100
- · Replies 1 ·
Understanding 2x2 Matrices: Representation and Dot Product
- Josh Conneely
- · Replies 1 ·
Finding the applied force at an angle?
- Bethany
- · Replies 1 ·
Rotational dynamics Find acceleration
- ForceFail
- · Replies 5 ·
A Guide to Planning and Hosting a Successful Thanksgiving Dinner
- Eddie10
- · Replies 4 ·
Tension Problem (Two strings and an object)
- AY3
- · Replies 5 ·
Heat Transfer fourier's law Problem
- guppygould
- · Replies 37 ·
Determining maximum coefficients of friction
- sleepcity
- · Replies 1 ·
How Does Firing a Cannonball in Space Affect an Astronaut's Rotation?
- Satvik Pandey
- · Replies 20 ·
Electric Potential- Two Charges
- chapmanv
- · Replies 1 ·
Ratio of Lengths b/a for Torques Equilibrium
- gcombina
- · Replies 2 ·
Calculating Required Heading for North-East Sailing with Current at 5km/h
- Smartgurl
- · Replies 4 ·
Acceleration of a vehicle, rotor angular acceleration, and belt drive velocity
- JohnP60
- · Replies 3 ·
[Grade 12 Physics] Vector addition/Mechanics
- mattyc33
- · Replies 10 ·
Deriving Velocity and Acceleration from Position Vector r(t)
- GoodTimes
- · Replies 5 ·
Spring length at zero load and work stretching spring 10 to 15 cm
- gwhite00
- · Replies 1 ·
Can an Earthed Conductor Become Charged by a Nearby Charged Object?
- 21joanna12
- · Replies 3 ·
Interesting question regarding simple decomposing of vectors
- panzerlol
- · Replies 1 ·
How to Calculate Steam Engine Efficiency and Water Usage in a Power Plant
- toothpaste666
- · Replies 18 ·
Conservation of Momentum in an Atom Interaction
- cacofolius
- · Replies 4 ·
Gravitational force on a telescope orbiting earth
- logan3
- · Replies 1 ·
Why Is the Box Not Moving Despite Unbalanced Forces on an Inclined Plane?
- BOAS
- · Replies 4 ·
How to find one value in terms of other variables?
- Eddie10
- · Replies 3 ·
How Do You Calculate Acceleration and Tension in a Double Atwood Machine?
- hitemup
- · Replies 3 ·
Finding Final Velocity: Calculating the Velocity of a Rock Tossed Straight Up
- Mei_797
- · Replies 2 ·
Calculating Max Speed of a Car on a Horizontal Road
- Kararr
- · Replies 7 ·
Maximum people in a crate lifeboat before sinking
- Hurr1cane
- · Replies 13 ·
Banking a Curve without Friction
- logan3
- · Replies 16 ·
Polarization of reflected and refracted rays at Brewster angle
- desmond iking
- · Replies 5 ·
No, this is not correct. See my previous post.
- James Prado
- · Replies 2 ·
Why is amplitude the equilibrium stretch, not the pull distance?
- agenttiny200
- · Replies 5 ·
Is Angular Acceleration Zero in Constant Rolling Motion?
- gcombina
- · Replies 3 ·
How Fast Must a Camper Slide to Reach the Shore by Throwing Rocks?
- soto2018
- · Replies 1 ·
Bullet is fired into block at at offset, conversation of kinetic energy?
- tomorrow_808
- · Replies 4 ·
Easy conceptual energy problem?
- mot
- · Replies 12 ·
One dimension conservative force and potential energy
- SPhy
- · Replies 1 ·
Finding the Satellite Orbital Radius
- logan3
- · Replies 7 ·
Why do we interpret this vertical angle to be a horizontal angle?
- CivilSigma
- · Replies 1 ·
Banked curve problem: why can't I find normal force from gravity times cosθ?
- TheExibo
- · Replies 4 ·
How do I set up this pendulum problem with a pivot point not on edge
- grandpa2390
- · Replies 18 ·
Acceleration of an inclined plane?
- iloveephysics
- · Replies 4 ·
Neutron collision in quantum mechanics
- Frank Einstein
- · Replies 2 ·
What is the tension required for the crosspiece in an A-frame structure?
- iPromise
- · Replies 4 ·
Simple Acceleration-Distance runner problem doesn't self-check
- Head_Unit
- · Replies 2 ·