Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
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 ·
How Do You Solve Basic Gravity Problems in Physics?
- ihopeican
- · Replies 6 ·