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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Understanding Momentum and Kinetic Energy Conservation in Elastic Collisions
- joe789
- · Replies 3 ·
Calculate the constant force exerted on the pole-vaulter
- hshphyss
- · Replies 4 ·
Uniform acceleration vector problem
- DB
- · Replies 2 ·
Calculating Equivalent Capacitance of Infinite Array with Co as Capacitance
- thenewbosco
- · Replies 4 ·
How Does Friction Affect Work in a Pulley System with Unequal Masses?
- Barkeeper Moe
- · Replies 1 ·
Conservation of momentum and energy problem
- cheez
- · Replies 3 ·
How Far Does a Car Travel After Driving Off a Cliff?
- kingyof2thejring
- · Replies 2 ·
Time to Calculate the Piano's Fall
- kingyof2thejring
- · Replies 12 ·
Calculating Intercept Time and Distance in a Police Chase
- m00c0w
- · Replies 11 ·
Solving Rotational Energy Problem | 1.6m Stick, .4-.070kg/m^2
- Jack86
- · Replies 8 ·
Refraction: Solving Tricky Questions
- NewScientist
- · Replies 3 ·
Solving Light Optics Problem: Find Reflection Point
- jena
- · Replies 5 ·
Two Theoretical Questions about Force (have answers but confused)
- confusedbyphysics
- · Replies 3 ·
Understanding Acceleration: Why is it Negative When an Object is Falling?
- Kandy
- · Replies 4 ·
How does the beat frequency change when the mirror's speed is much smaller than the speed of light?
- thenewbosco
- · Replies 1 ·
Explaining How a Fridge & Meteorite Work With the First Law of Thermodynamics
- Jason_Hyde
- · Replies 1 ·
Calculating Time in Air for a Vertically Launched Rocket
- kingyof2thejring
- · Replies 3 ·
Solve PVg Volume-Weight Problem: 28 N Required
- Izekid
- · Replies 3 ·
How Accurate is Radiocarbon Dating for Determining the Age of a Mummy?
- Ukitake Jyuushirou
- · Replies 2 ·
Find Max Power Dissipation in Circuits with Variables
- stunner5000pt
- · Replies 1 ·
Find expression of current in this circuit
- stunner5000pt
- · Replies 4 ·
Calculating Kinetic Energy and Average Force in a Wall Push Experiment
- Tubs
- · Replies 7 ·
How Do You Calculate Water Speed in a Pipe Using Bernoulli's Principle?
- blue88
- · Replies 3 ·
Measuring Acceleration Due to Gravity: Experiments & Graphs
- UnD
- · Replies 1 ·
Calculation Error: Iodine-131 Half-Life & 30 Days
- Ukitake Jyuushirou
- · Replies 3 ·
Integrating 1/sqrt(x^2 + y^2 + z^2) Using Trig Substitution: A Physics Problem
- perryben
- · Replies 3 ·
Testing Poiseulle's Law: Flow Rate vs Length
- Jodi
- · Replies 1 ·
Calculating the Period of Deimos: Phobos vs Deimos
- StaticShock
- · Replies 1 ·
How Do You Calculate Rotational Inertia for Cross Arms in Physics Lab?
- eunhye732
- · Replies 1 ·
Calculating New Period of a Collapsed Sun Using Conservation of Angular Momentum
- cheez
- · Replies 2 ·
Calculating Work and Power in Mechanical Systems
- Barkeeper Moe
- · Replies 4 ·
How Does Deuterium's Vibrational Frequency Compare to Helium's?
- jdog6
- · Replies 1 ·
What is the Average Velocity Problem and How Can It Be Solved?
- cocoavi
- · Replies 3 ·
Minimum power that must be provided to the air-conditioner
- jdog6
- · Replies 1 ·
Calculating Tammy's Displacement
- sweet877
- · Replies 3 ·
Calculating COP of Refrigerator: Solve with W=P(delta)t
- jdog6
- · Replies 1 ·
Understanding Significant Figures: Rules, Accuracy & Loss
- Zee Student
- · Replies 1 ·
Rotational motion of a spool of wire
- Punchlinegirl
- · Replies 11 ·
A very tought physics sum I am having trouble with.
- daisy_polly
- · Replies 3 ·
This problem is driving me NUTS
- StaticShock
- · Replies 3 ·
Find the Height of a Cliff with Sound Homework Help - Expert Guidance"
- Physic_Scholar
- · Replies 3 ·
Calculating Charged Object Mass and Attraction Force
- chipsdeluxe
- · Replies 3 ·
How Much Work Is Required to Push a Mass Up an Inclined Plane with Friction?
- mahi
- · Replies 1 ·
Uniform Circular Motion with friction
- serrino
- · Replies 2 ·
Understanding Relativistic Kinetic Energy in Modern Physics
- Carolina Joe
- · Replies 6 ·
How Much Power Does Niagara Falls Generate?
- hshphyss
- · Replies 1 ·
What Are Some Creative Ways to Launch a Marble with Precision and Consistency?
- bijanv
- · Replies 6 ·
.Understanding Torque: Forces, Rotation, and Equilibrium
- beginner16
- · Replies 10 ·
What is the Velocity of a Car in a Loop-the-Loop Amusement Park Ride?
- ledhead86
- · Replies 15 ·
Flywheel Rotation: Calculate Total Angle After 48.7s
- Punchlinegirl
- · Replies 2 ·
How High to Release a Mass for Loop-the-Loop Motion?
- Erwin Schrodinger
- · Replies 10 ·
Solving the Sheep and Grass Puzzle: Maximum Number of Sheep
- mb34
- · Replies 5 ·
Kind of helpin from othersthax everyone.
- kubu
- · Replies 12 ·
Conservation of energy question
- dnt
- · Replies 5 ·
What Does the Equation (KE1-KE2)/KE2 = M/(M+m) Represent in Physics?
- priyavyas13
- · Replies 4 ·
Find Tension of Meter Stick Attached to Wall
- jbgibson
- · Replies 17 ·
How to Balance a Seesaw with Three Children?
- Equilibrium
- · Replies 10 ·
Moment of Inertia - Need Guidance
- hoseA
- · Replies 2 ·
Solving Distance Traveled Using Coefficient of Friction
- idontspeakmath
- · Replies 3 ·
How Does Conservation of Momentum Determine the Trajectory of Rocket Fragments?
- DStan27
- · Replies 2 ·
Really,reall need your help-I'm totally lost
- boris16
- · Replies 10 ·
Two Masses Connected by a Pulley
- brentd49
- · Replies 1 ·
Solve Tricky Homework Problem: Ice Flake Speed in Hemispherical Bowl
- lbofin1
- · Replies 1 ·
Solving for Mechanical Energy in a Stopping Bullet Problem
- suspenc3
- · Replies 2 ·
NCalculating Work on a 45Kg Block on an Incline | Physics Problems and Solutions
- suspenc3
- · Replies 7 ·
Distance between Ships A and B after 2 Hours: Solve the Relative Motion Problem
- vbplaya
- · Replies 1 ·
Calculating Recoil Speed: Mass, Arrow and Velocity
- DStan27
- · Replies 3 ·
How Fast Does the Block Travel After Leaving the Spring?
- ledhead86
- · Replies 8 ·
F = Minimum Force Required to Lift Bicycle Wheel off Ground
- leezak
- · Replies 7 ·
How Do You Calculate the Center of Mass and Kinetic Energy in Physics Problems?
- physixnot4me
- · Replies 2 ·
Angular Acceleration/ Find angle in period - PLEASE help
- hoseA
- · Replies 2 ·
What is the Method for Calculating Instant and Average Velocity from a Graph?
- cocoavi
- · Replies 5 ·
Solving Momentum Questions: Bird on a Swing
- lvuittongirl22
- · Replies 4 ·
What is the Speed of the Upper End of a Falling Pole?
- HPVic03
- · Replies 6 ·
Calculating Spring Constant for an 8kg Stone Resting on a Compressed Spring
- suspenc3
- · Replies 2 ·
How Do Kepler's Laws Explain Satellite Orbits and Gravity Points?
- Steven-
- · Replies 1 ·
Solving a Spring Compression Puzzle: Work Done by Gravity
- suspenc3
- · Replies 4 ·
How High Does a Stone Reach When Shot from a Slingshot?
- Aka
- · Replies 1 ·
What Force Lifts a Bicycle Wheel Over a Step?
- leezak
- · Replies 1 ·
What Forces Do Stepladders Exert on a Plank with a Painter?
- Equilibrium
- · Replies 7 ·
Angular acceleration & cylinder
- Punchlinegirl
- · Replies 4 ·
What did I do wrong? (Newton's Second Law)
- th77
- · Replies 6 ·
Force and Motion (with tension)
- th77
- · Replies 7 ·
Why is dm negative in the rocket equation derivation?
- brentd49
- · Replies 4 ·
Help with rotation about a fixed axis
- alexhavak
- · Replies 2 ·
Impulse, elastic collisions and Inelastic
- jrd007
- · Replies 14 ·
Lorentz Force Law, am i messing up vector algebra?
- mr_coffee
- · Replies 3 ·
Another Angular Acceleration Problem
- jbgibson
- · Replies 4 ·
Where is the point of zero gravitational force between Mars and the Sun?
- cgotu2
- · Replies 2 ·
Circular Motion Problems: Maximum Angular Speed and Slip Calculation
- Sciphi
- · Replies 2 ·
Solving Momentum Problems: Rocket, Crate & Cannon
- litto_0ne
- · Replies 2 ·
Calculate the average power required by the electric motors
- shepwarp
- · Replies 2 ·
Calculating the Area Under a Graph | Find the Shaded Region on a Lab Image
- interXdragon
- · Replies 4 ·
Determine the angular acceleration of the block
- ViewtifulBeau
- · Replies 1 ·
Centripetal Force and a Word Problem
- briguy2188
- · Replies 23 ·
What is the Entropy Change in Cooling Aluminum from 373K to 333.45K?
- jmcgraw
- · Replies 3 ·
Rollercoaster Physics: Minimizing h for a Safe Loop-the-Loop Ride
- ledhead86
- · Replies 7 ·
What is the maximum power rating of a kettle
- daewoo
- · Replies 7 ·
What is the formula for finding the speed of a roller coaster at point A?
- badtwistoffate
- · Replies 3 ·
What is the impulse delivered to the ball by the racquet?
- runawayshoes
- · Replies 5 ·