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 Much Force to Pull a Platinum Ring from Water?
- iskar
- · Replies 1 ·
How Does Tension Affect Friction and Acceleration on a Horizontal Surface?
- ttk3
- · Replies 1 ·
Prove sin²θ + cos²θ = 1
- Propaganda777
- · Replies 12 ·
Kinetic Friction of shoved box of books
- BBallman_08
- · Replies 2 ·
Finding r in the polar form z=re^{i heta} for z=1+i
- Oblio
- · Replies 17 ·
Car negotiating a banked curve - centripetal force
- frasifrasi
- · Replies 6 ·
What is the motion of objects under uniform acceleration?
- xCanx
- · Replies 10 ·
Setting up nodal equations for two-node circuit
- bengaltiger14
- · Replies 5 ·
What creates the reaction force in a vertical circle?
- daveyavey
- · Replies 4 ·
What do they mean by identifying types of forces?
- libertylovescie
- · Replies 3 ·
How Do Pulleys and Tensions Affect Masses and Forces?
- rickportega
- · Replies 13 ·
Relating a_{2x} and a_{1x}/a_{1y}
- polymerase
- · Replies 8 ·
What are the differences between scalar and vector quantities?
- libertylovescie
- · Replies 2 ·
Tangential and total acceleration of a point on a rotating turntable
- anglum
- · Replies 3 ·
Ball thrown downward from 30.8 m at 7.75 m/s
- I am a Newbie
- · Replies 3 ·
Solve for Tension: Find Magnitude of Tension in Connecting Cord
- chaotixmonjuish
- · Replies 2 ·
Calculating Flight Time for Birds in Windy Conditions
- Ecterine
- · Replies 2 ·
Weight on an Incline: Understanding Angles
- pooface
- · Replies 1 ·
Calculating Force on Handle of 23-kg Suitcase
- josephpatricks
- · Replies 3 ·
What is the kinetic energy of the electron?
- jamespetrovitch
- · Replies 4 ·
How Does Fluid Velocity Compare at Different Points in a Siphon Tube?
- nath_quam
- · Replies 2 ·
Find Change in Charge of Identical Capacitors w/ Dielectric Insertion
- Winzer
- · Replies 3 ·
How Does CO2 Volume Change When Released to Ambient Air?
- dsignguy
- · Replies 3 ·
Tricky Electric Charge Problem
- PFStudent
- · Replies 6 ·
Thermal energy from friction on a horizontal surface after a frictionless ramp
- iheartpink
- · Replies 6 ·
Golf ball velocity components from 8 iron at 35 degrees
- DarkTangent
- · Replies 1 ·
Calculating Wave Speed of a Sinusoidal Wave with a Given Equation
- johnchang
- · Replies 2 ·
Converting displacement to position for a position-time graph
- bubbless
- · Replies 1 ·
Air Puck Correct Method or not
- rash219
- · Replies 4 ·
What is the velocity and position of a bus after a given time?
- CursedAntagonis
- · Replies 2 ·
When will the car and van collide if they do at all.
- ~christina~
- · Replies 1 ·
Can kinematic equations be used when acceleration is zero?
- ~christina~
- · Replies 8 ·
Flux Calculation for Sphere of Radius R and Detector Acceptance D
- hokutose
- · Replies 1 ·
How Is Damping Calculated in a Spring-Mass System?
- miann
- · Replies 8 ·
Pendulum problem: Horizontal force and work done
- DukeJP2010
- · Replies 1 ·
Determine the magnitude ad direction of the vector
- innightmare
- · Replies 2 ·
Solving Physics Problems: Max Height, Velocity & Horizontal Dist.
- Heat
- · Replies 16 ·
How Does Charge Distribution Affect Electric Fields in Concentric Spheres?
- Arisa
- · Replies 1 ·
What does the area under a force vs. position curve represent?
- sisika
- · Replies 1 ·
Solving Elevator Problem: Physics Student in Accelerating Elevator
- sheri1987
- · Replies 1 ·
Throwing a Ball Horizontally from a Building: Physics Analysis
- Ecterine
- · Replies 2 ·
Solving for Time in Uniform Circular Motion and Moving Sidewalk Problems
- shade585
- · Replies 9 ·
Deriving Formula for Surface Area of Black Hole
- Werg22
- · Replies 6 ·
Optics - Diameter of moon viewed through telescope
- elizabeth9681
- · Replies 1 ·
Is My Beam Hinge Pin Calculation Correct?
- BIGEYE
- · Replies 5 ·
How long for a cop car accelerating at 9 km/h² to catch a speeder going 110 km/h?
- anglum
- · Replies 66 ·
Force Problem with football punter
- Claymore
- · Replies 4 ·
How Does Friction Both Propel and Slow Down a Car?
- screaminseamin1
- · Replies 1 ·
Lift and resistance forces on plane traveling at 30 degrees
- rbm003
- · Replies 5 ·
Derive Formula for Surface Area of Black Hole
- Werg22
- · Replies 1 ·
Finding initial speed to throw bagels to moving jogging target
- devilsangels287
- · Replies 12 ·
What is the distance traveled by the block in the next 5.70 s?
- Heat
- · Replies 5 ·
Projectile Motion - Trajectory
- melle_87@hotmai
- · Replies 1 ·
Which has the larger moment of inertia?
- eraemia
- · Replies 4 ·
Calculating Trip Time for Laser Beam to Moon and Back
- Stillwind
- · Replies 2 ·
Nonconservative Force Question-
- perfectionist17
- · Replies 2 ·
Determine the length of l (equilibrium)
- ND3G
- · Replies 1 ·
Solve Car Chase Problem: Find (Delta)t & Speed of Car B
- Karma
- · Replies 6 ·
Induced charge between/above infinite charged plates
- mitleid
- · Replies 1 ·
Normal Force, Static and Kinectic Friction.
- stillborndesire
- · Replies 1 ·
Two balls dropped from heights H and 5H reaching ground simultaneously
- mathphysicnb
- · Replies 7 ·
Two blocks hanging on an incline
- chaotixmonjuish
- · Replies 11 ·
Calculate Tension in String 1 for Hanging Sign Problem
- chaotixmonjuish
- · Replies 15 ·
Finding kinetic force and net work
- thatgirlyouknow
- · Replies 12 ·
Eliminate some variable from two equations
- danni7070
- · Replies 4 ·
Field and Potential of 3 charges conceptual problem
- mitleid
- · Replies 4 ·
Trouble finding the acceleration
- danni7070
- · Replies 4 ·
Calculating Uncertainty of g in Propagation of Error
- smithg86
- · Replies 2 ·
Finding wave speed, tension and frequency from a graph
- aliaze1
- · Replies 7 ·
Calculating the Thickness of a Doped Silicon Strip with Given Current and Width
- mrlucky0
- · Replies 4 ·
Finding angle of total vector displacement from three-leg trip
- 1PRFall2006
- · Replies 3 ·
Potential difference between Bird's Feet?
- mrlucky0
- · Replies 4 ·
How Does Archimedes's Law Apply to Harmonic Motion?
- Omri
- · Replies 2 ·
Horizontal Projectile Motion Question
- jbutl3r25
- · Replies 4 ·
Newton's Laws: Finding the tension in a cord.
- Greggers
- · Replies 3 ·
Magnitude of the overall Velocity problem
- jbutl3r25
- · Replies 1 ·
How Fast Must a Volleyball Be Served to Clear the Net and Land Inbounds?
- noeinstein
- · Replies 2 ·
Understanding Charge and Electric Fields
- FeynmanMH42
- · Replies 4 ·
Find the time the ball is in motion
- jbutl3r25
- · Replies 5 ·
Calculating Time and Distance of a Baseball's Horizontal Motion at 161 km/h
- B-80
- · Replies 1 ·
How Does Ramp Angle and Friction Affect Ice Block Speed?
- physicsgirlie26
- · Replies 1 ·
What should be on the x and y axis of this graph?
- w3tw1lly
- · Replies 2 ·
When is the Scalar Form of Coulomb's Law Negative?
- PFStudent
- · Replies 4 ·
What is an example of an object accelerating while its velocity is zero?
- starks.L
- · Replies 1 ·
Motion of a Block with Three Forces
- fubag
- · Replies 5 ·
Calculating Energy of a 701nm Photon
- leah0084
- · Replies 4 ·
What is the height of the plane when the decoy was released?
- B-80
- · Replies 3 ·
Tension in Rope Problem: Calculating Tension in a Ski Lift Tow Rope
- physicsgirlie26
- · Replies 2 ·
Projectile ball on curved runway (conservative forces)
- thatgirlyouknow
- · Replies 3 ·
When does the particle first cross the negative x axis?
- HeLLz aNgeL
- · Replies 12 ·
Rocket Acceleration, position and velocity
- Lmaonade
- · Replies 1 ·
Calculating Force of Attraction between Earth and 3.0 kg Mass
- sheri1987
- · Replies 1 ·
Finding instantaneous speed at t = 20 s
- Bensky
- · Replies 7 ·
Newton's Law of gravitation using kepler's laws.
- Sourabh N
- · Replies 1 ·
Heat exchange when a balloon rises in water
- armandowww
- · Replies 13 ·
Inelastic relativistic collision
- armandowww
- · Replies 5 ·
How Do You Calculate Electron Force and Speed in Bohr's Atom Model?
- suhaskowshik_92
- · Replies 1 ·
How to calculate uncertainty when multiplying D1²-D2² by π, t, and 4 for volume
- kayleech
- · Replies 4 ·
Terminal Velocity and Mass Relationship in a Proportionality Argument
- opticaltempest
- · Replies 4 ·
Finding the formula for relative velocity problems
- kuliraga
- · Replies 6 ·